study c programing

Structure Data Type Example

2016-04-02T20:35:00.000-07:00

Structure Data Type Example

#include
#include
#include

struct Date {
int Month; /* Members */
int Day;
int Year;
};

struct Date AddDecade(struct Date);

int main(int argc, char *argv[])
{
struct Date BDay;

char buffer[50];

printf("What month were you born? ");
BDay.Month = atoi(gets_s(buffer, 50));

printf("What day were you born? ");
BDay.Day = atoi(gets_s(buffer, 50));

printf("What year were you born? ");
BDay.Year = atoi(gets_s(buffer, 50));

printf("You were born on %d, %d, %d?\n", BDay.Month, BDay.Day, BDay.Year);

BDay = AddDecade(BDay);

printf("You will be 10 years older on %d, %d, %d\n", BDay.Month, BDay.Day, BDay.Year);
_getch();

}

struct Date AddDecade(struct Date Target) {

Target.Year += 10;
Target.Month += 100;
return Target;

}

a value in an array is passing to a function Example

2016-03-23T04:50:00.002-07:00

value in an array is passing to a function Example

Same as the previous program but the simple difference which is Red colourly quoted pointer calling

#include

int array_test(int arra[]);

int main ()

{

int line[5] = {10,20,30,40,50};

array_test(line );

return 0;

getch();

}

array_test(int arra1[])

{

int i;

printf("arra value is ");

for(i=4; i>-1; i-- )

printf(" _%d ",*arra1++);

return 0;

}

a value in an array is passing to a function Example

2016-03-23T04:43:00.003-07:00

A value in an array is passing to a function Example

#include
#include

int array_test(int arra[]); // function
int main ()
{

int line[5] = {10,20,30,40,50}; // array value named line
array_test(line ); // array value passed to the function by function call
return 0;
getch();

}

array_test(int arra1[]) // function and declared an array named as arra1 to take the value from line
{
int i;
printf("arra value is ");
for(i=4; i>-1; i-- )
printf(" _%d ",arra1[i]);
return 0;
}

getbit() function K&R 2.9

2016-03-15T07:58:00.001-07:00

getbit() function

#include
#include
int getbit(unsigned number, int position,int width )
{
return(number>>(position+1-width)) & ~(~0<

}

int main ()

{ unsigned int a ;

a = getbit(0xA7,6,4);
printf(" The extracted bit is %d = ", a);
return 0;
getch();

}

atoi(char s[]) function

2016-03-13T09:11:00.003-07:00

atoi(char s[]) function

#include
#include

int atoi( char s[])
{
int n,i;
n = 0;

for(i = 0; s[i] >= '0' && s[i] <= '9'; ++i)
n= 10 * n + (s[i] - '0');
return n;
}

int main()
{
int c;
char s[]= {'3','4','9'};
c= atoi(s);

printf("%d",c);

getch();
return 0;

}

Use of enum data type

2016-03-11T23:17:00.003-08:00

Use of enum data type example

#include
#include
enum portselector { port1 = 1, port2,port3,port4
} selected;
void port(enum portselector);

int main(void)
{
int data;
printf("Enter the port you want -Port1=1,...,Port4 =4\n");
scanf("%d", &data);

selected=data;
port(selected);
printf("\n\nGiven Number is = %d ",data);

getch();
return(0);
}
void port(enum portselector selected)
{
switch (selected)
{
case port1:
printf("port1 selected\n");
break;
case port2:
printf("port2 selected\n");
break;
case port3:
printf("port3 selected.\n");
break;
case port4:
printf("port4 selected\n");
break;

default:
printf("no port available hi hi hi only 4 ports .\n");
}
}

whenever the function pass the value (int data = selected) the switch case check the number .

File Coping

2016-03-07T05:45:00.000-08:00

Read character and print until the end of file EOF

Here the program to copy or read by getchar() function And the words or character print it by putchar() function

#include
#include

int main()
{
char a;

while((a=getchar()) != EOF)
putchar(a);
getch();
return 0;

}

See the out put

Use of getchar() ,putchar() functions

2016-03-07T05:32:00.001-08:00

Use of getchar() ,putchar() functions

The use of getchar function is to capture or get the data / the typed character from (single chara) keyboard .

the putchar() is do just opposite of getchar()

It prints directly to the screen , so we dont need use the printf() function .

Look the program and output

here used getchar() function to get char.
putchar() and printf() function is used to print the given data.

Uses of for loop

2016-03-07T04:23:00.002-08:00

Uses of for loop

#include
#include

int main()
{

int far;
for(far = 0 ; far <= 300; far +=20)
printf("%3d %6.1f\n" ,far ,(5.0/9.0) * (far - 32));
getch();

return 0;
}

Char Data Type

2016-03-07T04:08:00.000-08:00

the char is used to storing simple character

Unsigned: It consist only positive value i.e 0 to 255.

Signed: It consist both negative and positive values but in different formats like

-1 to -128

0 to +127

And this all explanation is about 8 bit number system
Char has 1 byte only

int main()
{
char a ;

etc

Working of a floating point data type

2016-03-07T03:45:00.000-08:00

Working of a floating point data type

Look and understand the program and output shown below simple understand what will

happen there

#include
#include

int main(){

float far = 10;

printf("%1.0f\n", far );
printf("%2.0f\n", far);
printf("%3.0f\n", far);
printf("%4.0f\n", far);
printf("%5.0f\n\n", far);

printf("%1.1f\n", far );
printf("%1.2f\n", far);
printf("%1.3f\n", far);
printf("%1.4f\n", far);
printf("%1.5f\n", far);

getch();
return 0;
}

Working Of while loop

2016-03-07T02:06:00.001-08:00

The while loop operates as follows , the condition is tested ,if the it is true .
That is the condition is true that means

for example
10 == 10 . or 10<20 .="" etc="" p="">If it is true the statement in the while loop will be work or execute

while(i < j )
{
stament for exection

}

Example

while(far <= upper )

     {  

       celsius = 5 * (far - 32)/9;

       printf("%d\t%d\n", far ,celsius);

       far += step;

  }

it will execute till until the condition will get false  .

that is the far not equal to upper

NB :

   The body of the while loop may be single or more line .

  If there is a single line there is no need to add a the curly {} bracket

Eg :

       while(i < j)

        i = 2 * i ;  // it will repeat until the condition fall

K&R text Book page 8

2016-03-07T01:47:00.003-08:00

Variable and Arithmetic Operation

#include

#include



 int main(){



int far ,celsius;

int lower ,upper,step;

  

  lower = 0;

  upper = 300;

  step =20;

   

   far = lower;

   

     while(far <= upper )

     {  

       celsius = 5 * (far - 32)/9;

       printf("%d\t%d\n", far ,celsius);

       far += step;

  }

 

 getch();

 return 0;

}

Uses Of %d in c Programming

2016-03-07T01:34:00.003-08:00

Many Of them getting confusion in %d. lokk the various output at diffrent %d .ie . %2D ,%3d, %4d etc

Introduction to c programming

2016-03-07T00:27:00.004-08:00

Introduction to c programming

First Program

Hello World Program

We need to compiler and an IDE I am using Dev C++ IDE very good and simple one

It is a free and Open Source IDE .And small in size download it from Here Click Here

first Program

To print out the following words hello World

next tutorials

Shift Operator Tutorials in C

2015-09-16T01:10:00.002-07:00

SHIFT OPERATION IN C

I had more times learned the bit shift operator after some days i am forgetting that . so i am expressing the details how it works . through this i can rewind this post to learn it ..

Left shift operator
The syntax for writing shift operator as follows

[variable]<<[number of places]

This is writing as follows
1<

Here 1 is variable ,the operator << ; left shift and a is the number ie, how much bit position is needed to shift to left.

In detail :
In the LEFT shift (<<) first you write an N number of of zeros , where the 'N" is the number placed in number of places

for Example :
1) 1<<3 font="">
ie , 1 will be left shift by putting 3 zeros

ie, 1 wrote first and put 3 zeros

1000

finally

1<<3 1000="" 16="" binary="" decimal="" font="" in="" or="">

Example 2)
3>>3;
11... then 3 zeros
11000 = 24 in decimal

Example 3)
5<<3 comment-3--="">

101... 000

ie 101000

Example 3) 3<<5 comment-5--="">

1100000

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welcome

2010-01-23T08:05:00.000-08:00