C Programs Basics

C Program Fahrenheit To Celsius Conversion And Vice Versa

noreply@blogger.com (Bhushan hadkar) — Mon, 29 Dec 2014 06:59:00 +0000

We going to perform the c program of temperature conversion from Fahrenheit to Celsius and vice versa.

We can use the following formulas to do so :

C = (f-32)/1.8.

f = 1.8 * C + 32.

C Program To Convert Temperature From Fahrenheit To Celsius

#include<stdio.h>
#include<conio.h>

void main()
{
 float celsius, fahrenheit;
 clrscr();

 printf("\n Enter Temp in Fahrenheit : ");
 scanf("%f", &fahrenheit);

 celsius = (fahrenheit-32) / 1.8;
 printf("\n Temperature in Celsius : %.2f ", celsius);

 getch();

}

Output :

Temperature Conversion From Celsius to Fahrenheit C Program

#include<stdio.h>
#include<conio.h>

void main()
{
 float celsius, fahrenheit;
 clrscr();

 printf("\n Enter Temp in Celsius : ");
 scanf("%f", &celsius);

 fahrenheit = (1.8 * celsius) + 32;
 printf("\n Temperature in Fahrenheit : %.2f ", fahrenheit);

 getch();

}

Output :

In this way we can easily convert temperature from fahrenheit to celsius and vice versa.

C Program To Find Armstrong Number Using Do While Loop

noreply@blogger.com (Bhushan hadkar) — Sat, 20 Dec 2014 11:37:00 +0000

In this C program, we are going to find whether an entered number by user is an Armstrong number or Not.

What is an Armstrong Number ?
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself.

For example, 153 is an Armstrong number since 1*1*1 + 5*5*5+ 3*3*3= 153.

C Program To Find Armstrong Number

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,c,d,s=0,num;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 num=n;

 do
 {
  d=n%10;
  c=d*d*d;
  s=s+c;
  n=n/10;
 }while(n!=0);

 if(s==num)
   printf("\n %d is Armstrong Number",num);

 else
   printf("\n %d is Not an Armstrong Number",num);

 getch();

}

Output :

In this way we can check armstrong number in c. Also check, how we can find armstrong numbers in a given range.

C Program To Find Armstrong Number In Given Range (0-999)

noreply@blogger.com (Bhushan hadkar) — Sat, 20 Dec 2014 11:17:00 +0000

We have seen how to check if the given number is Armstrong number or not in c, now we have to find armstrong numbers in a range of numbers specified by the user.

To perform this program we have to get a number from the user, and run a loop from 1 to the number entered by the user.

And In this loop, we have to run the program to check the given number is armstrong number or not. And then if the number armstrong we have to print it on the screen.

C Program To Generate And Print Armstrong Numbers

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,i,t,c,d,s=0;
 clrscr();

 printf("\n Enter the range from 0 to : ");
 scanf("%d",&n);

 printf("\n Armstrong Numbers are :");

 for(i=0;i<=n;i++)
  {
    t=i;
    s=0;

 while(t!=0)
  {
    d=t%10;
    c=d*d*d;
    s=s+c;
    t=t/10;
  }

 if(s==i)
    printf(" %d",i);

 }

 getch();

}

Output :

In this way we can print armstrong numbers in a given range.

C Program To Find The Given Number Is Prime Or Not

noreply@blogger.com (Bhushan hadkar) — Wed, 10 Dec 2014 16:50:00 +0000

In the following program, we are going to find if the number entered by the user is a prime number or not. We can use different methods to do so.

What is a prime number?
A Prime Number is the one which can be evenly divided only by 1 and Itself.

C Program To Find Prime Number or Not

#include<stdio.h>
#include<conio.h>
void main()
{

 int n,i;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 for(i=2;i<=n-1;i++)
   {
     if(n%i==0)
     {
       break;
     }
   }

 if(n==i)
    printf("\n Prime Number");

 else
    printf("\n Not Prime Number");


  getch();

 }

Output :

In the above program what we do is,

we get a number from the user.
Start a loop which divides the entered number by 2,3,4... and so on until the number one less than the entered number.(since any number is completely divisible by 1 we start the loop from 2)
Here is the tricky part.
If the entered number isn't completely divisible by any of the number(which suggest the number is prime), that means the loop will run until the number one less than the entered number and value of 'i' will be equal to the entered number in the end. i.e(n==i)
Otherwise the number will be not prime.

However, this method is not so efficient when finding any bigger number such as 500 or 1000. As in that case, the loop has to run 499 and 999 times respectively.

One way mentioned in the video below can be more effective to find the given number is a prime number or not.

Also Check: C Program to Find Prime Numbers in A Given Range

C Program To Find The Prime Number Or Not Using The Function

#include<stdio.h>
#include<conio.h>

int prime(int m);

void main()
{

 int n;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 prime(n);

 getch();

 }

 int prime(int m)
 {
  int i,temp;
  for(i=2;i<=m/2;i++)
   {
     if(m%i==0)
     {
       temp=0;
       break;
     }
     else
      temp=1;
   }

 if(temp)
    printf("\n Prime Number");

 else
    printf("\n Not Prime Number");

   return 0;
 }

In this way we, we can find a number is prime or not using this simple method.

C Program To Find Prime Numbers In A Given Range

noreply@blogger.com (Bhushan hadkar) — Wed, 10 Dec 2014 16:38:00 +0000

We have seen how to find the given number is prime or not earlier. Now we will calculate prime numbers on a given range and print them on the screen.

Display Prime Numbers On a Given Range

#include<stdio.h>
#include<conio.h>
void main()
{

 int n,i,t;
 clrscr();

 printf("\n Enter The Range From 1 to : ");
 scanf("%d",&t);

 printf("\n Prime Numbers in the Range 1-%d :\n\n ",t);
 for(n=1;n<=t;n++)
  {
    for(i=2;i<=n-1;i++)
      {
        if(n%i==0)
          {
            break;
          }
      }

 if(n==i)
  printf(" %d",n);

  }
  getch();

}

Output :

Following are the prime numbers from 1-100.

In this way we, we can find prime numbers on given range and display them on the screen.

C Program To Reverse A Number Using While Loop

noreply@blogger.com (Bhushan hadkar) — Wed, 10 Dec 2014 15:24:00 +0000

We are going to write a c program to take a number as an input and reverse that number. We can do this by reversing each single digits of the whole number.

Reverse The Number Using While Loop

#include<stdio.h>
#include<conio.h>
void main()
{

 long int a,rev,d;
 clrscr();

 printf("\n **************************");

 printf("\n Enter Any Number: ");
 scanf("%ld",&a);

 rev=0;
 while(a!=0)
  {
    d=a%10;
    rev=rev*10+d;
    a=a/10;
  }

 printf("\n Reverse Number = %ld",rev);

 printf("\n **************************");

 getch();

}

Output :

In this way we can reverse a number using while loop in c programming.

C Program For Multiplication Table Of Number Using For Loop

noreply@blogger.com (Bhushan hadkar) — Mon, 08 Dec 2014 10:51:00 +0000

We are going to code multiplication table program in c, wherein we get a number from the user and print multiplication table of that number using for loop.

C Program To Display Multiplication Table

#include<stdio.h>
#include<conio.h>
void main()

{

int n,i,a=1;
clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 if(n<=0)
 printf("\n Negative Number Or Zero Not Allowed ! ");

 else

 for(i=1;i<=10; i++)
 {
 a=n*i;
 printf("\n  %d",a);
 }

 getch();
 }

Output :

In the above program, we multiply the number entered by the user with 1 to 10 with the help of a for loop and store the value in variable 'a' each time the loop is executed.

Check the programs we can do with the help of Loop In C.

Thus, we get multiplication table of the entered number and we print it using the printf statement in c.

Know, How to display something on the output screen in the first c program.

C Program To Find Factorial Of A Number Using While Loop

noreply@blogger.com (Bhushan hadkar) — Mon, 08 Dec 2014 10:35:00 +0000

In this c program, we are going to calculate the factorial of any entered number using while loop and for loop. We can also define a function to do so.

Calculate Factorial Of A Number Using While Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int num,i;
 long fact=1;
 clrscr();

 printf("\n Enter Any Number: ");
 scanf("%d",&num);

 if(num<=0)
 printf("\n Invalid Number! ");

 else
 {
   fact=num;

   i=1;
   while(i<num)
    {
      fact=fact*i;
      i++;
    }

    printf("\n Factorial = %ld",fact);
 }
 getch();

}

Output:

C Program To Find Factorial Of A Number Using For Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int num,i;
 long fact=1;
 clrscr();

 printf("\n Enter Any Number: ");
 scanf("%d",&num);
 if(num<=0)
 printf("\n Invalid Number ! ");

 else
 {
  fact=num;

  for(i=1;i<num;i++)
    {
     fact=fact*i;
    }

    printf("\n Factorial = %ld",fact);
 }
 getch();

}

I found the appropriate explanation of the above program in the video below.

Find Factorial Of A Number Using Function

#include<stdio.h>
#include<conio.h>

void factorial();

void main()
{
 clrscr();

 factorial();

 getch();

}

void factorial()
{
 int i,n;
 long fact=1;

 printf("\n Enter Any Number: ");
 scanf("%d",&n);

 if(n<=0)
 printf("\n Negative Number or Zero Not Allowed ! ");

 else
 {
  fact=n;

  for(i=1;i<n;i++)
    {
     fact=fact*i;
    }
 }
 printf("\n Factorial = %ld",fact);

 }

In this way, we can find factorial of any given number with the help of while loop, for loop as well as function.

C Program To Print Even And Odd Numbers Using Loops

noreply@blogger.com (Bhushan hadkar) — Sun, 07 Dec 2014 14:09:00 +0000

We are going to write a c program to print the list of even and odd numbers. we can do this by using loops such as while loop, do while loop and for loop.

C Program To Print Even and Odd Numbers Using While Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,last;
 clrscr();

 printf("\n Enter Last Number : ");
 scanf("%d",&last);

 //While Loop

 //Code For Even Number List
 printf("\n Even Number List :\n ");

 n=2;
 while(n<=last)
 {
  printf(" %d",n);
  n=n+2;
 }

 //Code For Odd Number List
 printf("\n\n Odd Number List :\n ");

 n=1;
 while(n<=last)
 {
  printf(" %d",n);
  n=n+2;
 }

 getch();

}

Output:

In the above program,

We have initialized the values of even and odd numbers from 2 and 1 respectively.
Then we have printed each number and increased it by two in the next iteration using loop to get the next even or odd number respectively.

Display Even and Odd Number List Using Do While Loop

When using do while loop the condition is declared after the first iteration as shown below.

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,last;
 clrscr();

 printf("\n Enter Last Number : ");
 scanf("%d",&last);

 // Do_While Loop

 // Code for Even Number list
 printf("\n Even Number List :\n ");

 n=2;
 do
  {
   printf(" %d",n);
   n=n+2;

  } while(n<=last);

 // Code for Odd Number List
 printf("\n\n Odd Number List :\n ");

 n=1;
  do
  {
   printf(" %d",n);
   n=n+2;

  } while(n<=last);

 getch();
 }

C Program To Print Even and Odd Numbers Using For Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,last;
 clrscr();

 printf("\n Enter Last Number : ");
 scanf("%d",&last);

 //  For loop
 // Code For Even Number List
 printf("\n Even Number List :\n ");

 for(n=2;n<=last;n+=2)
  {
    printf(" %d",n);
  }

 // Code For Odd Number List
 printf("\n\n Odd Number List :\n ");

 for(n=1;n<=last;n+=2)
 {
   printf(" %d",n);
 }

 getch();

}

We can also use the method we used to find even or odd number in c to print the list of odd and even numbers.

C Program To Print Even and Odd Numbers

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,i,last;
 clrscr();

 printf("\n Enter Last Number : ");
 scanf("%d",&last);

 printf("\n Even Number List :\n ");

 for(i=1;i<=last;i++)
 {
   if(i%2==0)
    {
      printf(" %d",i);
    }
 }

 printf("\n\n Odd Number List :\n ");

 for(i=1;i<=last;i++)
 {
   if(i%2!=0)
    {
      printf(" %d",i);
    }
 }

  getch();
}

This way we can print even and odd numbers list in c programming.

C Program To Print Numbers From 10 To 1 Using Loop

noreply@blogger.com (Bhushan hadkar) — Sun, 07 Dec 2014 09:09:00 +0000

This c program will print 10 to 1 numbers in descending order. We will perform this program using While Loop, Do While Loop and For Loop.

C Program To Print 10 to 1 Numbers Using While Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

 // While Loop

 n=10;         //Initialize
 while(n>=1)   // Condition
 {
  printf(" %d",n);
  n--;     // Decrement
 }

 getch();

}

Also Check: C Program To Print 1-10 Numbers Using while,do-while and for loop

Output :

Display 10-1 Numbers using do..while loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

 // Do While Loop
 n=10;  // Initialize
 do
  {
   printf(" %d",n);
   n--;          // Decrement
  }
  while(n>=1); // Condition


 getch();
 }

C Program To Print Numbers From 10 To 1 Using For Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

  //  For loop
 //  (initialize; condition ; increment)

 for(n=10;n>=1;n--)
 {
   printf(" %d",n);
 }

 getch();

}

To Run this program in DevC++ we have to make some changes in the above program, after changes the code will look like this:

#include<stdio.h>

int main()
{
 int n;
 
 printf("\n"); //for new line

  //  For loop
 //  (initialize; condition ; increment)

 for(n=10;n>=1;n--)
 {
   printf(" %d",n);
 }

 getch();
return 0;
}

Output :

In this way, we can easily display numbers in any range using different types of loops.

C Program To Print Numbers From 1 To 10 Using Loop

noreply@blogger.com (Bhushan hadkar) — Sun, 07 Dec 2014 08:33:00 +0000

In this c program, you will learn how to to print 1-10 numbers, using three different types of loops viz. For Loop, While Loop and Do While Loop.

We have learned how to print any statement or number in the First C Program. Now we will print one to ten numbers using loops in c programming .

C Program To Display 1-10 Numbers Using While Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

 // While Loop

 n=1;         //Initialize
 while(n<=10)   // Condition
 {
  printf(" %d",n);
  n++;    // Increment
 }

 getch();

}

There is a little bit of difference in the while and do while loop. In while loop, the condition is checked first and in do while loop the condition is checked after the first execution of the codeblock.

Using Do While Loop We can Print 1-10 Numbers as Follow:

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

 // Do While Loop
 n=1;  // Initialize
 do
  {
   printf(" %d",n);
   n++;          // Increment
  }
  while(n<=10); // Condition


 getch();
 }

In three of these loops, For Loop is bit easy to use as it has the all the code to be used in single line

C Program To Print Numbers From 1 To 10 Using For Loop

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n"); //for new line

  /*  For loop
  (initialize; condition ; increment) */

 for(n=1;n<=10;n++)
 {
   printf(" %d",n);
 }

 getch();

}

Output :

Dev C++ Source Code to Print 1-10 Numbers Using For Loop

#include<stdio.h>

int main()
{
 int n;

 printf("\n"); 

 for(n=1;n<=10;n++)
 {
   printf(" %d",n);
 }

 getch();
 
 return 0;
}

Output :

In this way, you can print 1-10 Numbers in C. Also, by modifying the code a little bit you can print the range of numbers you want, just change the initial and last values in the condition and that range will get printed on the output screen.

C Program To Calculate The Gross Salary Of A Person

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 14:24:00 +0000

To find out gross salary, we are going to take the basic salary of a person as an input. Find out D.A. and T.A. according to basic salary and then add them all.

C Program To Determine Gross Salary Of A Person

#include<stdio.h>
#include<conio.h>

void main()
{
   int basic;
   float gross,da, ta;
   clrscr();

   printf("\n Enter Basic Salary : ");
   scanf("%d", &basic);

   da = 0.1 * basic;
   ta = 0.12 * basic;

   gross = basic + da + ta;

   printf("\n Your Gross Salary is : %.2f",gross);

   getch();
}

Output:

In the above program, we calculated the gross salary of a single person by taking the basic salary. Now, we will calculate gross salary of different employees, according to their years of experience.

We will refer to the following chart.

Years Of Experience	Basic Salary	Dearness Allowance	Travelling Allowance
>=25 years	50000	2%	4%
>=10 years	30000	2%	4%
>=5 years	20000	5%	7%
>=2 years	12000	5%	7%
>2 years	8000	6%	8%

C Program To Calculate Gross Salary Of An Employee

#include<stdio.h>
#include<conio.h>
void main()
{
 int y;
 float basic,ta,da,gross;
 clrscr();

 printf("\n Enter Your Years Of Experience : ");
 scanf("%d",&y);
 printf("\n *********************************");

 // Ladder If Statement //

 if(y>=25)
   {
     basic=50000;
     da=0.02*basic;
     ta=0.04*basic;
     gross=basic+da+ta;
   }

 else if(y>=10)
   {
     basic=30000;
     da=0.02*basic;
     ta=0.04*basic;
     gross=basic+da+ta;
   }

 else if(y>=5)
   {
     basic=20000;
     da=0.05*basic;
     ta=0.07*basic;
     gross=basic+da+ta;
   }

 else if(y>=2)
   {
     basic=12000;
     da=0.05*basic;
     ta=0.07*basic;
     gross=basic+da+ta;
   }

 else
   {
     basic=8000;
     da=0.06*basic;
     ta=0.08*basic;
     gross=basic+da+ta;
   }


 printf("\n\n Your Basic Salary is: %.0f",basic);

 printf("\n\n Your Gross Salary is : %.2f",gross);
 printf("\n\n *********************************");

 getch();
}

Output:

In this way, we can calculate the gross salary of a person or employees using this c program.

C Program To Find Grades Of A Student Using Else If Ladder

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 10:49:00 +0000

In the previous program, we have seen how to calculate total marks and average, in this program we will see how to give grades according to the marks be obtained, using the ladder if statement.

We will refer to the following Chart of percentage and grades.

Percentage	Grades
>=80	A+
>=75	A
>=60	B
>=45	C
>=35	D
<35	Fail

C Program To Give Grades According To Mark Obtained

#include<stdio.h>
#include<conio.h>
void main()
{
 int s1,s2,s3,s4,s5,t,p;
 clrscr();

 printf("\n Enter marks of 5 subjects each out of 100 ");
 printf("\n\n ********************************************");

 printf("\n\n Maths = ");
 scanf("%d",&s1);

 printf("\n Science = ");
 scanf("%d",&s2);

 printf("\n English = ");
 scanf("%d",&s3);

 printf("\n History = ");
 scanf("%d",&s4);

 printf("\n Geography = ");
 scanf("%d",&s5);
 printf("\n ********************************************");

 t=s1+s2+s3+s4+s5;  //Total
 printf("\n Total marks = %d/500",t);

 p=t/5;  //Percentage
 printf("\n\n Percentage = %d%",p);
 printf("\n ********************************************");

//////////// Ladder If Statement ////////////
 if(p>=80)
    printf("\n\n Your Grade : A+");

   else if(p>=75)
     printf("\n\n Your Grade : A");

     else if(p>=60)
       printf("\n\n Your Grade : B");

        else if(p>=45)
          printf("\n\n Your Grade : C");

            else if(p>=35)
              printf("\n\n Your grade : D");

   else
     printf("\n\n You Are Fail");

 //////// Ladder If Statement /////////////

 getch();
}

Output :

This way we have written a c program to find grades using an else if ladder statement.

C Program To Find Smallest Of Two Numbers Using Operators

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 08:37:00 +0000

This c program will teach you, how to find smallest of two given numbers using logical operator, conditional or ternary operator and arithmetical operator.

C Program To Determine Smallest Of Two Numbers Using Logical Operator.

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a<b)   //logical test
   {
    printf("\n %d is Smaller",a);
   }
  else
   {
    printf("\n %d is Smaller",b);
   }

 getch();
}

Output :

C Program To Calculate Smallest Of Two Numbers Using Conditional Operator/ Ternary Operator

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=(a<b) ? a : b ;   // Conditional operator

  printf("\n %d is Smaller",c);

  getch();
}

We have also used the conditional operator to find greatest of two numbers in c, here the condition changes from (a>b) to (a<b) give us the smaller number.

C Program To Find Smallest of Two Numbers Using Arithmetical Operator.

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=a-b;

  if(c<0)
  printf("\n %d is Smaller",a);

  else
  printf("\n %d is Smaller",b);

 getch();
}

In the above code,

First we get two numbers from user and subtract the first one from second.
If the subtraction is a negative number that means first number (a) is smaller than the second one (b), for example if we take a=4 and b=5 then a-b will be equal to -1 which is a negative number. It means the first number is smaller.
On the contrary if the subtraction is a positive number the second number (b) is smaller than the first one.

Dev C++ Code for the above program

#include<stdio.h>
int main()
{
  int a,b;
  printf("\n Enter Any Two numbers\n");
  
  printf("\n Enter First Number : ");
  scanf("%d",&a);
  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a<b)//logical test
   {
    printf("\n %d is Smaller",a);
   }
  else
   {
    printf("\n %d is Smaller",b);
   }
 getch();
 return 0;
}

Output :

C Program To Find Greatest Of Two Numbers Using Operators

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 08:13:00 +0000

In this c program, you are going to find the greatest of two numbers, by taking the two numbers from a user as an input.

C Program To Find Which Number is Greater From Two Given Numbers

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a>b)//logical test
   {
    printf("\n %d is Greater",a);
   }

  else
   {
    printf("\n %d is Greater",b);
   }

 getch();
}

Output :

Likewise we can also write a c program to find smallest of two numbers using operators.

There are several other methods to perform the same program, we will see two of them, one is by the use of a conditional operator and the second is by using arithmetical operator.

Read More About Operators in C.

C Program To Find Greatest Of Two Numbers Using Conditional Operator/Ternary Operator

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=(a>b) ? a : b ;   // Conditional operator

  printf("\n %d is Greater",c);

  getch();
}

In the above program, we have used conditional / ternary operator.

General format of conditional operator:

( Condition ? Statements 1 : Statements 2 )

Working : This operator works same as the If..Else.. statement, condition is declared before the question mark, if the condition is true, statements after the question mark will be executed and if the condition turns out to be false statements after the colon will be executed.

Find Greater Number From Two Using Arithmetical Operator

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,c;
  clrscr();

  printf("\n Enter any Two numbers\n");

  printf("\n Enter First Number : ");
  scanf("%d",&a);

  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  c=a-b;

  if(c>0)
  printf("\n %d is Greater",a);

  else
  printf("\n %d is Greater",b);

 getch();
}

As shown in this source code above,

We get two numbers from the user and subtract the second number from the first one.
If the subtraction is positive (i.e greater than 0) means the first number is greater
If the subtraction is negative (i.e less than 0) then the second number is greater.

Also Read: C Program To Check If Given Number Is Positive Or Negative

C program for Dev C++ to find greater number from two given Numbers

#include<stdio.h>
int main()
{
  int a,b;
  printf("\n Enter Any Two numbers\n");
  printf("\n Enter First Number : ");
  scanf("%d",&a);
  printf("\n Enter Second Number : ");
  scanf("%d",&b);

  if(a>b)//logical test
   {
    printf("\n %d is Greater",a);
   }
  else
   {
    printf("\n %d is Greater",b);
   }
 getch();
 return 0;
}

Output:

We have seen how to write a C program to find the greatest number from two given numbers in various ways.

C Program To Check Whether A Person Is Eligible To Vote

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 07:44:00 +0000

We are going to write a program in c which can check if the candidate is eligible to vote or not. We can do this by using a simple if-else statement.

C Program For Checking Voter Eligibility

#include<stdio.h>
#include<conio.h>
void main()
{
int age;
char name[50]; // or *name
clrscr();

 printf("\n Type the Name of the candidate: ");
 gets(name);

 printf("\n Enter The Age : ");
 scanf("%d",&age);

 if(age>=18)
  {
    printf("\n %s is Eligible for Vote",name);
  }
 else
  {
    printf("\n %s is Not Eligible for Vote",name);
  }

 getch();
}

Output :

In the above program, we have declared a variable 'age' for age and a character string 'name[50]' for the name of the candidate.

Then we get the values of name from the user using the gets() function. We can also use the scanf() function to get the string values from the user as we have used it to get the value of age. But the problem with scanf() is you can't get spaces in it. Meaning if a user Enters: 'Name' 'Surname' only the Value of 'Name' will get stored in the variable.

Now to decide if a person is eligible for voting or not we have simply used an if-else statement.

Similar programs we can do using if-else statment : 

1. Find Even Or Odd Number

2. Find Positive Or Negative Number

3. Find Greatest and Smallest Number

Here in India the eligibility criteria for a candidate to vote is the person should be 18 years of age or greater. So we will Check the age is greater than or equal to 18. (You can change this condition according to your country and regulations.)

If the Age is less than 18 that person is not eligible for vote else the person is eligible for voting.

In this way, we can decide whether a person is eligible to vote or not in c programming.

C Program To Find The Given Number Is Even Or Odd

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 07:10:00 +0000

We are going to write a c program to find even or odd number, we can determine this by using if-else, switch case or the conditional operator. Also, we can use functions.

C Program to Check Whether a Number is Even or Odd Using If-Else

In the following program, we will check if the entered number is completely divisible by 2. To check this, we will use Modulus Operator(%). This operator will return the remainder of the division. If the remainder is zero that means the number is completely divisible by 2 and is even number else it will be an odd number.

#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 if(n%2==0)
  {
    printf("\n %d is Even number",n);
  }
 else
  {
    printf("\n %d is Odd number",n);
  }

 getch();
}

Output :

Also Check, How to Print Even and Odd Number List

C Program To Find Even Or Odd Using Switch Case

#include<stdio.h>
#include<conio.h>
void main()
{
 int n,r;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 r=n%2;

 switch(r)
 {
  case 0 :
    printf("\n %d is Even Number",n);
    break;

  default:
    printf("\n %d is Odd Number ",n);
 }

 getch();
}

In the above program, We have stored the remainder in the variable 'r'and checked whether that is zero or not using the switch case. If it is zero the entered number is even, if not the number is odd.

C Program To Check Even Or Odd Using Conditional Operator

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 n%2 == 0 ? printf("\n %d is Even Number",n) : printf("\n %d is Odd Number",n);

 getch();
}

C Program To Find Even Or Odd Number Using Function

#include<stdio.h>
#include<conio.h>
int evenodd(int x);

void main()
{
  int n;
  clrscr();

  printf("\n Enter Any Number : ");
  scanf("%d",&n);

  evenodd(n);

  getch();
}

evenodd(int x)
{
 if(x%2==0)
   printf("\n %d is Even Number",x);

 else
   printf("\n %d is Odd Number",x);

 return 0;
}

Thus, we can easily find out the given number is even or odd in c programming by various methods.

C Program To Check If A Given Number is Positive Or Negative

noreply@blogger.com (Bhushan hadkar) — Fri, 05 Dec 2014 06:56:00 +0000

In this c program, we will get any random number from the user and check whether the number is positive or negative. The logic behind this is simple.

We get a number from the user using scanf function in c, check whether the number is greater than 0 or not. If the number turns out to be greater than zero we print the message as this number is positive or else the number is negative.

To perform this type of program we use conditional statement if...else..

The general format of If..Else...statement

if(condition = true)
  {
       // perform this statements
  } 
else
{
      //perform this statements
}

C program to check the number is positive or negative using if..else..statement

#include<stdio.h>
#include<conio.h>
void main()
{
 int n;
 clrscr();

 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 if(n>=0)
 {
  if(n==0)
   {
    printf("\n Number is Zero ");
   }
   else
   {
    printf("\n %d is Positive ",n);
   }
 }
 else
 {
  printf("\n %d is Negative ",n);
 }

 getch();
}

Output:

Positive or Negative - C Program for Dev C++

#include<stdio.h>
int main()
{
 int n;
 
 printf("\n Enter Any Number : ");
 scanf("%d",&n);

 if(n>=0)
 {
  if(n==0)
   {
    printf("\n Number is Zero ");
   }
   else
   {
    printf("\n %d is Positive ",n);
   }
 }
 else
 {
  printf("\n %d is Negative ",n);
 }

 getch();
 return 0;
}

Output:

In this way, we can perform the program to check whether the given number is positive or negative.

C Program To Swap Two Numbers Without Using Third Variable

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 15:31:00 +0000

We have seen how to swap two numbers in c using a third variable, now here we will learn the c program to swap two numbers without using a third variable.

Swapping of Two Numbers Without Using Third Variable

#include<stdio.h>
#include<conio.h>
void main()
{
 int a,b;
 clrscr();

 printf("\n Type any two numbers to swap:\n ");

 printf("\n A = ");
 scanf("%d",&a);

 printf("\n B = ");
 scanf("%d",&b);

 printf("\n Numbers before swapping \n");
 printf("\n A = %d \t B = %d",a,b);

 a=a+b;
 b=a-b;
 a=a-b;

 printf("\n\n Numbers after swapping\n");
 printf("\n A = %d \t B = %d",a,b);


getch();
}

Output :

When we used a third variable we interchanged the values of variables and swapped the numbers. Here ,

we have added both the numbers (A and B) and stored the total in one of the variables(A).
Then we subtracted both the numbers from the total one by one.
When you subtract one number (A) from the addition of two numbers (A & B) we get the second number (B).
Then we stored the values in appropriate variables to swap the values.

Dev C++ Program to Swap Two Numbers

#include<stdio.h>
int main()
{
 int a,b;
 
 printf("\n Type any two numbers to swap:\n ");

 printf("\n A = ");
 scanf("%d",&a);

 printf("\n B = ");
 scanf("%d",&b);

 printf("\n Numbers before swapping \n");
 printf("\n A = %d \t B = %d",a,b);

 a=a+b;
 b=a-b;
 a=a-b;

 printf("\n\n Numbers after swapping\n");
 printf("\n A = %d \t B = %d",a,b);

 getch();
return 0;
}

Output :

In this way, we can swap to numbers in c without using a third variable.

C Program To Swap Two Numbers Using A Third Variable

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 15:19:00 +0000

In this c program, we will get two numbers from the user and swap the values, meaning if A and B are two variables having the values 15 and 25 Respectively. After Swapping the Numbers, the values will change to A = 25 and B = 15.

Swapping Of Two Numbers In C Using A Third Variable

#include<stdio.h>
#include<conio.h>
void main()
{
 int a,b,temp;
 clrscr();

 printf("\n Type any two numbers to swap:\n ");

 printf("\n A = ");
 scanf("%d",&a);

 printf("\n B = ");
 scanf("%d",&b);

 printf("\n Numbers before swapping \n");
 printf("\n A = %d \t B = %d",a,b);

 temp=a;
 a=b;
 b=temp;

 printf("\n\n Numbers after swapping\n");
 printf("\n A = %d \t B = %d",a,b);


getch();
}

Output :

How Swapping Works!

(Image source: tutorial4us.com)

We use a temporary variable along with two variables A and B.
The logic behind this is easy. We will interchange the values in-between the variables.
As the temp variable have no value in it, we'll first move the value from A into temp variable.
Then We'll Move the value from B to A and then again the value we stored in temp into B.
This way the values of A and B gets swapped.

C Program to Swap Two Numbers in Dev C++

#include<stdio.h>
int main()
{
 int a,b,temp;

 printf("\n Type any two numbers to swap:\n ");

 printf("\n A = ");
 scanf("%d",&a);

 printf("\n B = ");
 scanf("%d",&b);

 printf("\n Numbers before swapping \n");
 printf("\n A = %d \t B = %d",a,b);

 temp=a;
 a=b;
 b=temp;

 printf("\n\n Numbers after swapping\n");
 printf("\n A = %d \t B = %d",a,b);


 getch();
return 0;
}

Output :

In this way, you can perform swapping of two numbers in c, you can also do the same program without using a third variable.

C Program To Calculate Area And Circumference Of Circle

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 13:29:00 +0000

This c program will find out the area and circumference of a circle by taking the radius of the circle as an input value from the user. We can also perform the program using the function.

C Program To Find Area And Perimeter Of Circle

#include<stdio.h>
#include <conio.h>

#define PI 3.141

void main()
{
 float a,r,c;
 clrscr();

 printf("\n Enter The Radius : ");
 scanf("%f",&r);

 a=PI*r*r; //area of circle formula
 c=2*PI*r; //circumference of circle formula

 printf("\n Area of circle = %0.2f units/sq",a);
 printf("\n\n Circumference Of circle = %0.2f units",c);

 getch();
}

Output :

In the above program, we have used the following formulas.

Area Of Circle A= π * r * r
Circumference Of Circle C = 2 * π * r
(Here PI(π) is constant and is equal to 3.141.)

C Program To Calculate Area And Circumference Of Circle Using Function

#include<stdio.h>
#include <conio.h>

#define PI 3.141

float area(float n);
float peri(float m);

void main()
{
 float a,r,c;
 clrscr();

 printf("\n Enter The Radius : ");
 scanf("%f",&r);
 
 a=area(r); //area of circle formula
 c=peri(r); //circumference of circle formula

 printf("\n Area of circle = %0.2f units/sq",a);
 printf("\n\n Circumference Of circle = %0.2f units",c);

 getch();
}

float area(float n)
{
  return(PI*n*n);
}

float peri(float m)
{
 return(2*PI*m);
}

In this way, we can find the area and perimeter of a circle using this simple method in c programming.

C Program To Find The Total And Average Of The Marks

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 13:07:00 +0000

We will write a program to get marks of five subject from the user and according to that calculate the total marks obtained as well as the percentage.

C Program to Calculate Total Marks and Average

#include<stdio.h>
#include<conio.h>
void main()
{
 int s1,s2,s3,s4,s5,t;
 float p;
 clrscr();

 printf("\n Enter marks of 5 subjects each out of 100 ");
 printf("\n\n ********************************************");

 printf("\n\n Maths = ");
 scanf("%d",&s1);

 printf("\n Science = ");
 scanf("%d",&s2);

 printf("\n English = ");
 scanf("%d",&s3);

 printf("\n History = ");
 scanf("%d",&s4);

 printf("\n Geography = ");
 scanf("%d",&s5);
 printf("\n ********************************************");

 t=s1+s2+s3+s4+s5;  //Total
 printf("\n Total marks = %d/500",t);

 p=t/5;  //Percentage
 printf("\n\n Percentage = %.2f",p);
 printf("\n ********************************************");

 getch();
}

Output:

Further, we can extend this program and give grades according to the marks obtained, also we can write the same program using the function.

C Program To Find Total Marks And Percentage Using Function

#include<stdio.h>
#include<conio.h>

 int total();
 int percentage();
 int sum;

 void main()
  {
   int t;
   float p;
   clrscr();

   t=total();
   printf("\n Total marks = %d/500",t);

   p=percentage();  //Percentage
   printf("\n\n Percentage = %.2f",p);
   printf("\n ********************************************");

   getch();
  }

 int total()
 {
   int s1,s2,s3,s4,s5;

   printf("\n Enter marks of 5 subjects each out of 100 ");
   printf("\n\n ********************************************");

   printf("\n\n Maths = ");
   scanf("%d",&s1);

   printf("\n Science = ");
   scanf("%d",&s2);

   printf("\n English = ");
   scanf("%d",&s3);

   printf("\n History = ");
   scanf("%d",&s4);

   printf("\n Geography = ");
   scanf("%d",&s5);
   printf("\n ********************************************");

 sum=s1+s2+s3+s4+s5;  //Total

 return(sum);
}

int percentage()
{
 return(sum/5);
}

This way we can write a c program to calculate total marks and percentage.

C Program To Add Two Numbers Using Functions/Pointer

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 09:41:00 +0000

In This c program, we are going to add two numbers, for example if we get two numbers 4 and 5 the program will output the result as 9 which equals to 4+5.

As said in the previous tutorial instead of declaring the values of the variables inside the program we will get the values by the user using scanf function in c to make the program general.

Read : How to use Scanf function in c program

C Program To Add Two Numbers Using Addition Operator

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,add;
clrscr();

printf("\n Enter Any Two Numbers To Add : ");
scanf("%d%d",&a,&b);

add=a+b;

printf("\n Addition = %d",add);

getch();
}

Output :

Watch the video below For Better Understanding of this program.

C Program For Dev C++ to Add Two Numbers

#include<stdio.h>
#include<conio.h>
 main()
{
 int a,b,add;
  
 printf("\n Enter Any Two Numbers To Add : ");
 scanf("%d%d",&a,&b); // get the values by user

 add=a+b; // addtion is performed and stored in "add"

 printf("\n Addition = %d",add); // display output

 getch();
 return 0;
 
}

Output :

We can Also Perform the addition of two numbers using functions in C for that we will create a function named as 'add'(it is not necessary to name it as add you can call it whatever you like) define the function appropriately and call it from the main function as shown below :

C program to add two numbers using function:

#include<stdio.h>
#include<conio.h>
int add(int a,int b); //function declaration

void main()
{
 int sum,x,y;
 clrscr();

 printf("\n Enter Any Two Numbers To Add : ");
 scanf("%d%d",&x,&y);

 sum=add(x,y); //calling the function

 printf("\n Addition = %d",sum);

 getch();

 }

 int add(int a, int b)  //definition of function
 {
  int c;

  c=a+b;

  return(c);
 }

We can also use pointers to perform this addition in C like below :

Add two numbers using pointers in C

#include<stdio.h>
#include<conio.h>
void main()
{
 int *p1,*p2,a,b,add;
 clrscr();

 printf("\n Enter Any Two Numbers To Add : ");
 scanf("%d%d",&a,&b);

 p1=&a;
 p2=&b;

 add= *p1 + *p2;

 printf("\n Addition = %d",add);

 getch();

}

In this way, we can add two numbers in C using functions and pointers.

C Program To Subtract Two Integers Using Function/Pointer

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 09:40:00 +0000

In this c program we are going to subtract any two given integers using functions and pointers and display the output.

C program to subtract any two integers

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,sub;
clrscr();

printf("\n Enter Any Two Numbers To Subtract : ");
scanf("%d%d",&a,&b);

sub=a-b;

printf("\n Subtraction = %d",sub);

getch();
}

Output :

Also Check : C Program To Add Any Two Numbers

C program for Dev C++ to subtract two integers

#include<stdio.h>

int main()
{
int a,b,sub;

printf("\n Enter Any Two Numbers To Subtract : ");
scanf("%d%d",&a,&b);

sub=a-b;

printf("\n Subtraction = %d",sub);

getch();
return 0;
}

Output :

Subtract any two numbers using functions in c

#include<stdio.h>
#include<conio.h>
int sub(int a,int b); //function declaration

void main()
{
 int result,x,y;
 clrscr();

 printf("\n Enter Any Two Numbers To Subtract : ");
 scanf("%d%d",&x,&y);

 result=sub(x,y); //calling the function

 printf("\n Subtraction = %d",result);

 getch();

 }

 int sub(int a, int b)  //definition of function
 {
  int c;

  c=a-b;

  return(c);
 }

C program to subtract any two given numbers using pointers

#include<stdio.h>
#include<conio.h>
void main()
{
 int *p1,*p2,a,b,sub;
 clrscr();

 printf("\n Enter Any Two Numbers To Subtract : ");
 scanf("%d%d",&a,&b);

 p1=&a;
 p2=&b;

 sub = *p1 - *p2;

 printf("\n Subtraction = %d",sub);

 getch();

}

In this way we can subtract two numbers in c programming.

C Program To Calculate Square And Cube Of Given Number

noreply@blogger.com (Bhushan hadkar) — Wed, 03 Dec 2014 07:29:00 +0000

Write a c program to find out the square and cube of any given number?

This c program will calculate the square and cube of any given number. We will also perform this by the use of functions.

C Program To Find Square and Cube Of A Number

#include<stdio.h>
#include<conio.h>
void main()
{
 int a,s,c;
 clrscr();

 printf("\n Enter A Number: ");
 scanf("%d",&a);

 s=a*a;  //Square = number * number
 c=s*a;  //Cube = Square * number

 printf("\n Square of %d is = %d",a,s);

 printf("\n\n Cube of %d is = %d",a,c);

 getch();
}

Output :

C Program To Determine Square and Cube of Number Using Function

#include<stdio.h>
#include<conio.h>

int square(int m);
int cube(int n);

void main()
{
  int x,s,c;
  clrscr();

  printf("\n Enter Any Number : ");
  scanf("%d",&x);

  s=square(x);
  c=cube(x);

  printf("\n Square of %d is = %d",x,s);

  printf("\n\n Cube of %d is = %d",x,c);

  getch();
}

 int square(int m)
 {
  return(m*m);
 }

 int cube(int n)
 {
   return(n*n*n);
 }

Dev C++ Code to Find the Square and Cube using Function

#include<stdio.h>

int square(int m);
int cube(int n);

void main()
{
  int x,s,c;

  printf("\n Enter Any Number : ");
  scanf("%d",&x);

  s=square(x);
  c=cube(x);

  printf("\n Square of %d is = %d",x,s);

  printf("\n\n Cube of %d is = %d",x,c);

  getch();
}

 int square(int m)
 {
  return(m*m);
 }

 int cube(int n)
 {
   return(n*n*n);
 }

Output :