C Function Type | Types Of Function In C Language | C Function Type In Hindi

C Function Type

There are 4 type of function in c which are known as user-define function in c.

1.no argument pass and no return value

2.argument pass but no return value

3.no argument but  a return value

4.argument pass and  a return value

Fig: C function type

 

    1.    No argument pass and no return value

When a function has no arguments, it does not receive any data from the calling function. Similarly when it does not return a value, the calling function does not receive any data from the called function.

Syntax :

Function declaration:  void function();

Function call:   function();

Function definition :

void function()

{

Statement;

} 

Program

//code of no argument and no return value

#include <stdio.h> void value(void); void main() {     value(); } void value(void) {     int year = 1, period = 5, amount = 5000, inrate = 0.12;     float sum;     sum = amount;     while (year <= period) {         sum = sum * (1 + inrate);         year = year + 1;     }     printf(" The total amount is %f:", sum); }

Output:

The total amount is 5000.000000

 

      2.    Function with arguments but no return value 

 When a function has arguments, it receive any data from the calling function but it returns no values.

 

Syntax :

Function declaration:  void function( int );

Function call:   function(x);

Function definition :

void function(int x)

{

Statement;

}

Program

// with argument but no return value

#include <stdio.h>

void function(int, int[], char[]);

int main()

{

          int a = 20;

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

          char str[30] = "dwivedicyberdairy";

          function(a, &ar[0], &str[0]);

          return 0;

}

 

void function(int a, int* ar, char* str)

{

          int i;

          printf("value of a is %d\n\n", a);

          for (i = 0; i < 5; i++) {

                   printf("value of ar[%d] is %d\n", i, ar[i]);

          }

          printf("\nvalue of str is %s\n", str);

}

Output:

Value of  a is 20

Value of ar[0] is 10

Value of ar[1] is 20

Value of ar[2] is 30

Value of ar[3] is 40

Value of ar[4] is 50

The given string is : dwivedicyberdairy

 

   

    3. Function with no arguments but returns a value

There could be occasions where we may need to design functions that may not take any arguments but returns a value to the calling function. A example for this is getchar function it has no parameters but it returns an integer an integer type data that represents a character.

Syntax :

Function declaration:  int function( );

Function call:   function();

Function definition :

int  function()

{

Statement;

return x;

}

 

Program

// C code for function with no arguments

// but have return value

#include <math.h>

#include <stdio.h> 

int sum();

int main()

{

          int num;

          num = sum();

          printf("\nSum of two given values = %d", num);

          return 0;

}

int sum()

{

          int a = 50, b = 80, sum;

          sum = sqrt(a) + sqrt(b);

          return sum;

}

Output:

Sum of two given values=16

4.    

    4.Function with arguments and return value

 

Syntax :

Function declaration:  int function(  int );

Function call:   function(x);

Function definition :

int  function(int x)

{

Statement;

return x;

}

 

 Program

 

/ / C code for function with arguments

// and with return value

#include <stdio.h>

#include <string.h>

int function(int, int[]);

 

int main()

{

          int i, a = 20;

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

          a = function(a, &arr[0]);

          printf("value of a is %d\n", a);

          for (i = 0; i < 5; i++) {

                   printf("value of arr[%d] is %d\n", i, arr[i]);

          }

          return 0;

}

 

int function(int a, int* arr)

{

          int i;

          a = a + 20;

          arr[0] = arr[0] + 50;

          arr[1] = arr[1] + 50;

          arr[2] = arr[2] + 50;

          arr[3] = arr[3] + 50;

          arr[4] = arr[4] + 50;

          return a;

}

 

Output:

 

Value of   a is 40

Value of arr[0] is 60

Value of arr[1] is 70

Value of arr[2] is 80

Value of arr[3] is 90

 Value of arr[4] is 100