<\/p>\n

Syntax<\/strong><\/h2>\n

<\/div>

Add(a, b) \/\/ a and b are the parameters <\/code><\/pre> <\/div>\n
Calling a function in C program<\/h3>\n
Add.c<\/strong><\/h3>\n
 
 <\/div> 
#include <stdio.h>  int add(int a, int b);   void main()  {    int sum;  int a, b;  printf(" Enter the first and second number \\n");  scanf("%d %d", &a, &b);  sum = add(a, b); \/\/ call add() function  printf( "The sum of the two number is %d", sum);  }  int add(int n1, int n2) \/\/ pass n1 and n2 parameter  {  int c;  c = n1 + n2;  return c;  }  <\/code><\/pre> <\/div>\n
Output<\/h3>\n
<\/p>\n
Call by value<\/strong><\/h2>\n
\n
When an single or multiple values of an argument are copied into formal parameters of a function, this type of functions is known as Call By Value.<\/li>\n
It does not change the value of the function`s actual parameter.<\/li>\n<\/ul>\n
Call by Value in C programming<\/h3>\n
Call_Value.c<\/strong><\/h3>\n
 
 <\/div> 
#include <stdio.h>  int main()  {  int x = 10, y = 20;  printf (" x = %d, y = %d from main before calling the function", x, y);  CallValue(x, y);  printf( "\\n x = %d, y = %d from main after calling the function", x, y);  }  int CallValue( int x, int y)  {  x = x + 5;  y = y + 5;  printf (" \\nx = %d, y = %d from modular function", x, y);  }   <\/code><\/pre> <\/div>\n
Output<\/h3>\n
<\/p>\n
Call By Reference<\/strong><\/h2>\n
\n
As name suggests call by reference is a method, where the address of the actual argument is copied into the function call’s formal parameter.<\/li>\n
This type of method is known as\u00a0Call by Reference.<\/li>\n
If we make some changes in the formal parameters, it shows the effect in the value of the actual parameter.<\/li>\n<\/ul>\n
Call by Reference in C programming<\/h3>\n
Call_Ref.c<\/strong><\/h3>\n
 
 <\/div> 
#include <stdio.h>  int main()  {  int x = 10, y = 20;  printf (" x = %d, y = %d from main before calling the function", x, y);  CallValue (&x, &y);  printf( "\\n x = %d, y = %d from main after calling the function", x, y);  }  int CallRef( int *a, int *b)  {  *a = *a + 5;  *b = *b + 5;  printf (" \\nx = %d, y = %d from modular function", *a, *b);  }  <\/code><\/pre> <\/div>\n
Output<\/h3>\n
<\/p>\n
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A function call is very important in programming. When we need to call a function, it is called inside a program. A function which is being called by the parent functions is known as called functions Function which is being called is known as calling function. A function is called by the program whenever it […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[1716],"tags":[18716,18818,18822,18815,2076,18817,2062,18813,18821,18823,18819,18816,18820,18814],"class_list":["post-4938","post","type-post","status-publish","format-standard","hentry","category-c","tag-c-functions","tag-c-user-defined-functions","tag-called-function-and-calling-function","tag-calling-a-functio-in-c-programming","tag-function-in-c-programming-examples","tag-types-of-function-calls-in-c","tag-types-of-functions-in-c","tag-what-is-a-called-function-and-calling-function-in-c","tag-what-is-called-function","tag-what-is-called-function-and-calling-function-in-c","tag-what-is-calling-function-in-c","tag-what-is-function-call-in-c","tag-what-is-function-in-c","tag-what-is-the-function-call-in-c"],"yoast_head":"\n