computer science

Program to find square of a number.

2026-08-29T17:24:20.417+05:30

Program to find square of a number.

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

printf ("Enter any number to find its square: ");
scanf ("%d", &a);

b = a * a;

printf ("Square of %d is %d", a, b);
getch();
}

What is Character set

2020-08-09T16:02:00.010+05:30

What is Character set

A Character denotes any alphabets, digits and special symbols used to represent information

for Example

alphabets	A,B...Y,Z Or a,b...y,z
Digits	0,1,2,3,4,5,6,7,8,9
Special symbols	`~ !@#$%^&*()_+-=}{\|":<>?/.,;'\][

Constants, variables and keywords

The alphabets, digits and special symbols when properly combined from constants, variable and keywords. A constants is an entity that doesn't change, whereas, a variable is an entity that may change. A keyword is a word that carries special meaning.

In any C program, we typically do lots of calculations. The result of these calculation are store in memory of computer, Like human memory, the memory of computer also consists of millions of cell. The calculated value are store in the brain. That way computer are calculation store in memory ( as hard disk etc). Since the value stored in each locations may change.

In programming language, constants are often called literals, whereas variable are called identifiers.

we understand the constants and variable, let us see.

What different types of constants and variables in C

Types of constants in C

constants in C can be divided into two major categories:

) Primary constants
) Secondary constants

Primary constants Secondary constants

Integer constants
Real constants
Character constants

Array
Pointer
Structure
Union
Enum etc.

Rules for constructing integer constants

a). An integer constants must have at least one digits.

b). It must not have a decimal point.

c). It can be any of zero, positive or negative.

d). If no sign precedes an integer constants, it is assumed to be positive .

e). no commas or blanks are allowed within an integer constant.

f). The allowable range for integer constants is -2147483648 to +2147483648.

Truly speaking, the range of an integer constant depends upon the compiler. for compilers such as Visual Studio, GCC, it is -2147483648 to +2147483647, Whereas for compilers such as turbo c or turbo c++, the range is -32768 to +32767.

Rules for Constructing Real Constants

Real constants are often called foating point constants. Real constants could be written in two forms fractional form and exponential form. following rules must be observed while constructing real constants expressed in fractional form :

a) A real constant must have at least one digit.

b) It must have a decimal point.

c) It could be either positive or negative.

d) Default sign is positive.

e) No commas or blanks are allowed within a real constant.

for example:-

+345.45
90.09
-67.78
-767.89685

What is C

2020-08-07T22:35:00.005+05:30

Learn Programming C

Now See First Topic-

Getting Started

What is C?

C is a programming language developed AT Bell laboratories of USA in 1972. It was designed and written by Dennis Ritchie. C become popular because it is reliable, simple and technologies emerge and really good.

An opinion that is that is often heard today is " C has been already superseded by language like C, C# or Java. There are several reasons for this. There are as follows:-

C++, C# or Java make use of a principle called object oriented programming (OOP) to organize the program,You would still need a good hold over the language elements of C and the basic programming skills. So it make more sense to first learn C and then migrate to C++, C#, Java . Though this two-step learning process may take more time, but at the end of it, you will definitely find it worth the trouble.
Major part of popular operating systems like Window, Linux, UNIX, etc. and android are written in C. moreover, if one is to extend the operating systems to work with new devices, one needs to write device driver programs are written exclusively in C.

Getting Started with C

There is a close analogy between learning English language and learning c language. While leaning English, we first learn alphabet and digits, then learn to combine them to from words and numbers, which, in turn, are combined to from sentences and sentences are combined to from paragraphs.

While learning C, We first learn alphabets, digits and special symbols. Then we learn how to combine them to from constants, variables, and keywords, and finally, how to combine them to from an instructions. A group of instructions can then be combined to program.

step in learning English language:

Alphabets

➖

words

sentences

paragraphs

step in learning C language:

Alphabets

Digits

Special symbols

Constants

Variables

Keywords

Instructions

Program

Program to find the length of the string entered by user

2020-04-29T04:10:00.002+05:30

Program to find the length of the string entered by user

#include <stdio.h>
#include <conio.h>
void main()
{
int i= 0;
char ch, str[20];
clrscr();

printf ("Enter the string: ");
gets(str);
ch=str[0];
while (ch!='0')
{
i++;
ch= str[i];
}

printf ("Length is %d", i);
getch();
}

Program to insert a user-defined element at specific location

2020-04-29T04:08:00.007+05:30

Program to insert a user-defined element at specific location

#include <stdio.h>
#include <conio.h>
void main()
{
int A[10], i, num, pos, n;
clrscr();

printf ("Enter the number of elements: ");
scanf ("%d", &n);

printf ("Enter the data: ");
for ( i=0; i<n; i++)
{
scanf ("%d", &A[i]);
}

printf ("Enter the new element value and it's position: ");
scanf ("%d%d", &num, &pos);

for ( i=n; i>pos; i- -)
{
A[i+1]=A[i];
}

A[pos]=num;
printf ("New array is: \n");

for (i=0;i<n+1;i++)
{
printf ("%d\t", A[i]);
}

getch();
}

Program to arrange the elements of an array using Bubble Sort

2020-04-29T04:08:00.006+05:30

Program to arrange the elements of an array using Bubble Sort

#include <stdio.h>
#include <conio.h>
void main()
{
int A[10], i, j, n, temp;
clrscr();

printf ("Enter the number of elements: ");
scanf ("%d", &n);

printf ("Enter the data: ");
for ( i=0; i<n; i++ )
{
scanf ("%d", &A[i]);
}

for ( i=0; i<n; i++ )
{
for ( j=0; j<n-i; j++ )
{
if ( A[j] > A[j+1])
{
temp = A[j];
A[j] = A[j+1];
A[j+1]=temp;
}
}
}

printf ("Sorted Array is "); //Sorted in Ascending Order
for ( i=0; i<n; i++ )
{
printf ("%d\t", A[i]);
}

getch();
}

Program to declare a user defined array and print the sum of odd and even numbers

2020-04-29T04:07:00.002+05:30

Program to declare a user defined array and print the sum of odd and even numbers.

#include <stdio.h>
#include <conio.h>
void main()
{
int a[10], i, sume=0, sumo= 0, n;
clrscr();

printf ("Enter the size of an array: ");
scanf ("%d", &n);

if (n<=10)
{
printf ("Enter the array data: ");
for (i=0;i<n;i++)
{
scanf ("%d", &a[i]);
}
for (i=0;i<n;i++)
{
if (a[i]%2==0)
sume = sume + a[i];
else
sumo = sumo + a[i];
}

printf ("Sum of odd number = %d and sum of even number = %d", sumo, sume);
}
else

printf ("\nSize is too large.");
getch();
}

Program to print the sum of each row and each column of a matrix separately

2020-04-29T04:06:00.000+05:30

Program to print the sum of each row and each column of a matrix separately

#include <stdio.h>
#include <conio.h>
# define SIZE 3
void main()
{
int A[SIZE][SIZE];
int row, col, sum = 0;
/* Input elements in matrix from user */
printf ("Enter elements in matrix of size %dx%d: \n", SIZE, SIZE);
for (row=0; row<SIZE; row++)
{
for (col=0; col<SIZE; col++)
{
scanf ("%d", &A[row][col]);
}
}

/* Calculate sum of elements of each row of matrix */
for (row=0; row<SIZE; row++)
{
sum = 0;
for (col=0; col<SIZE; col++)
{
sum += A[row][col];
}

printf ("Sum of elements of Row %d = %d\n", row+1, sum);
}

/* Find sum of elements of each columns of matrix */
for (row=0; row<SIZE; row++)
{
sum = 0;
for (col=0; col<SIZE; col++)
{
sum += A[col][row];
}
printf ("Sum of elements of Column %d = %d\n", row+1, sum);
}

getch();
}

Program to input two matrices and store their product in another third array

2020-04-29T04:05:00.001+05:30

Program to input two matrices and store their product in another third array

#include<stdio.h>
#include<conio.h>
void main()
{
int i, j, k, a[3][3], b[3][3], c[3][3];
clrscr();

printf ("Enter the elements of 1st array .\n");
for (i=1;i<=3;i++)
{
for (j=1;j<=3;j++)
{
scanf ("%d", &a[i][j]);
}
}

printf ("Elements of 1st array are: \n");
for (i=1;i<=3;i++)
{
for (j=1;j<=3;j++)
{
printf ("%d\t", a[i][j]);
}
printf ("\n");
}

printf ("Enter the elements of 2nd array .\n");
for (i=1;i<=3;i++)
{
for (j=1;j<=3;j++)
{
scanf ("%d", &b[i][j]);
}
}

printf ("Elements of 2nd array are: \n");
for (i=1;i<=3;i++)
{
for (j=1;j<=3;j++)
{
printf ("%d\t", b[i][j]);
}
printf ("\n");
}

printf ("The product of both the matrices are: \n");
for (i=1;i<=3;i++)
{
for (j=1;j<=3;j++)
{
c[i][j]=0;
for (k=1; k<=3;k++)
{
c[i][j] += a[i][k] * b[k][j];
}
}
}

for(i=1;i>=3;i++)
{
for(j=1;j<=3;j++)
{
printf("%d\t", c[i][j]);
}
printf("\n");
}
getch();
}

Program to find the largest and smallest element of a 1D array

2020-04-29T04:03:00.003+05:30

Program to find the largest and smallest element of a 1D array

#include <stdio.h>
#include <conio.h>
void main()
{
int arr[10], i, max, min, a;
clrscr();

printf ("Enter the number of the elements of an array: ");
scanf ("%d", &a);

printf ("Enter %d elements of the array: ", a);
for ( i=0; i<a; i++ )
{
scanf ("%d", &arr[i]);
}

max = arr[0];
min = arr[0];

for ( i=1; i<a; i++ )
{
if ( arr[i]>max )
{
max = arr[i];
}

if ( arr[i]<min )
{
min = arr[i];
}
}

printf ("Largest element is %d\n", max);
printf ("Smallest element is %d", min);

getch();
}

Program to access and print an array of 5 elements.

2020-04-29T04:02:00.002+05:30

Program to access and print an array of 5 elements.

#include <stdio.h>
#include <conio.h>
void main()
{
int num[5], a;
clrscr();

printf ("Enter the elements: \n");
for ( a=0;a<5;a++ )
{
scanf ("%d", &num[a]);
}
printf ("The elements are: \n");
for (a=0;a<5;a++)
{
printf ("%d\t", numb[a]);
}
getch();
}

Program to return a value from user-defined function.

2020-04-28T23:12:00.003+05:30

Program to return a value from user-defined function.

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

printf ("Enter two integer values to add: ");
scanf ("%d%d", &a, &b);

c = sum (a, b);

printf ("The addition is: %d", c);
getch();
}

int sum (int x, int y)
{
int add;
add = x + y;
return add;
}

Program to implement break statement.

2020-04-28T23:11:00.001+05:30

Program to implement break statement.

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

int i;
double number, sum = 0.0;

for (i=1; i <= 10; ++i)
{
printf ("Enter a n%d: ", i);
scanf ("%lf", &number);

// If user enters negative number, loop is terminated
if (number < 0.0)
{
break;
}
sum += number; // sum = sum + number;
}

printf ("Sum = %.2lf", sum);

return 0;
}

Program to find predecessor & successor of a number.

2020-04-28T23:09:00.002+05:30

Program to find predecessor & successor of a number.

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

int a, b, c;
clrscr();

printf ("Enter a number to find it's predecessor & successor: \n");
scanf (%d, &a);

b = a + 1;
printf ("The successor of %d is: %d\n", a, b);

c = a - 1;
printf ("The predecessor of %d is: %d\n", a, c);

getch();
}

Program to print following pattern:- * * *

2020-04-28T23:08:00.002+05:30

Program to print following pattern:-
*
**
***
****
*****
#include <stdio.h>
#include <conio.h>
void main()
{
int i, j, rows=7;

printf("The pattern is below: \n");
for(i=1; i<=rows; i++)
{
for(j=i; j<rows; j++)
{
printf(" ");
}
for(j=1; j<=i; j++)
{
printf("*");
}
printf("\n");
}
getch();
}

Program to print the following pattern:- * * * * * * *******

2020-04-28T23:07:00.000+05:30

Program to print the following pattern:-
*
***
*****
*******
*********
***********
*************

#include <stdio.h>
#include <conio.h>
void main()
{
int a, b, rows= 7, k=0;
clrscr();

printf("The pattern is below: \n");
for ( a=1; a<=rows; ++a, k=0)
{
for (b=1; b<=rows-a; ++b)
{
printf(" ");
}

while (k != 2*a-1)
{
printf("* ");
++k;
}

printf("\n");
}
getch();
}

Program to find area of circle.

2020-04-28T23:04:00.003+05:30

Program to find area of circle.

#include <stdio.h>
#include <conio.h>
void main()
{
float r, area, pi= 3.14;
clrscr();

printf ("Enter radius of the Circle: ");
scanf ("%f", &r);

area = pi * r * r;

printf ("Area of Circle: %f", area);
getch();
}

Program to print Fibonacci Series up-to n numbers.

2020-04-28T23:03:00.002+05:30

Program to print Fibonacci Series up-to n numbers.

#include <stdio.h>
#include <conio.h>
void main()
{
int a, b, x=0, y=1, z;
clrscr();

printf ("Enter the number of terms for Fibonacci Series: ");
scanf ("%d", &a);

printf ("\nFibonacci Series is: ");

for (b = 1; b <= a; ++b)
{
printf ("%d\t", x);
z = x + y;
x = y;
y = z;
}
getch();
}

Program to find cube of a number.

2020-04-28T20:23:00.002+05:30

Program to find cube of a number.

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

printf ("Enter any number to find its cube: ");
scanf ("%d", &a);

b = a * a * a;

printf ("Cube of %d is %d", a, b);
getch();
}

Program to find square of a number.

2020-04-28T20:22:00.009+05:30

Program to find square of a number.

2020-04-28T20:22:00.008+05:30

2020-04-28T20:21:00.002+05:30

2020-04-28T20:20:00.003+05:30

Program to find Fibonacci Series, Factorial or Multiplication Table of a number as per user's choice.

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
void fibonacci ();
void factorial ();
void multiplication ();
void main()
{
int b, c;
clrscr();

printf ("Enter your choice: ");
printf ("\n1. Find the Fibonacci Series upto the number.");
printf ("\n2. Find the Factorial of a number.");
printf ("\n3. Find the Multiplication Table of a number.");
printf ("\n4. Exit\n");
scanf ("%d", &b);

switch (b)
{
case 1: fibonacci ();
break;

case 2: factorial ();
break;

case 3: multiplication ();
break;

case 4: exit (0);
break;

default:
printf ("Enter the correct option.");
}

getch();
}

void fibonacci ()
{
int a, w, x= 0, y= 1, z;

printf ("Enter a positive integer: ");
scanf ("%d", &a);

printf ("The Fibonacci Series is: ");
for ( w=1; w<=a; ++w)
{
printf ("%d\t", x);
z = x + y;
x = y;
y = z;
}
}

void factorial ()
{
int a, n, num= 1;

printf ("Enter a positive integer: ");
scanf ("%d", &a);

for (n=1; n<=a; n++)
{
num = num * n;
}

printf ("The Factorial is: %d", num);
}

void multiplication ()
{
int a, m;

printf ("Enter a positive integer: ");
scanf ("%d", &a);

printf ("The multiplication table is: ");
for (m=1; m<=10; m++)
{
printf ("\n%d * %d = %d", a, m, a*m);
}
}

2020-04-28T20:18:00.003+05:30

Program to print factors of a given number.

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

printf ("Enter a number to find it's Factors: ");
scanf ("%d", &num);

printf ("Factors of the %d are: \n", num);
for (a = 1; a <= num; a++)
{
if (num%a == 0)
{
printf ("%d\t", a);
}
}
getch();
}

2020-04-28T20:17:00.004+05:30

Program to find the greatest number between 3 numbers.

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

printf ("Enter three numbers to find the greater: ");
scanf ("%d%d%d", &a, &b, &c);

if (a>b && a>c)
{
printf ("%d is the greatest number.", a);
}

else if (b>a && b>c)
{
printf ("%d is the greatest number.", b);
}

else if (c>a && c>b)
{
printf ("%d is the greatest number.", c);
}

else
{
printf ("An unknown error occurred!");
}

getch();
}

Primary constants	Secondary constants
Integer constants Real constants Character constants	Array Pointer Structure Union Enum etc.

computer science

Program to find square of a number.

What is Character set

What is Character set

Constants, variables and keywords

Types of constants in C

) Primary constants) Secondary constants

Primary constants Secondary constants Integer constantsReal constantsCharacter constants ArrayPointerStructure Union Enum etc. Rules for constructing integer constants

Rules for Constructing Real Constants

What is C

Learn Programming C

Now See First Topic-

Getting Started

What is C?

Getting Started with C

Program to find the length of the string entered by user

Program to insert a user-defined element at specific location

Program to arrange the elements of an array using Bubble Sort

Program to declare a user defined array and print the sum of odd and even numbers

Program to print the sum of each row and each column of a matrix separately

Program to input two matrices and store their product in another third array

Program to find the largest and smallest element of a 1D array

Program to access and print an array of 5 elements.

Program to return a value from user-defined function.

Program to implement break statement.

Program to find predecessor & successor of a number.

Program to print following pattern:- * ** *** **** *****

Program to print the following pattern:- * *** ***** ******* ********* *********** *************

Program to find area of circle.

Program to print Fibonacci Series up-to n numbers.

Program to find cube of a number.

Program to find square of a number.

Program to find square of a number.

) Primary constants
) Secondary constants

Primary constants Secondary constants

Integer constants
Real constants
Character constants

Array
Pointer
Structure
Union
Enum etc.

Rules for constructing integer constants

Program to print following pattern:- * * *

Program to print the following pattern:- * * * * * * *******