main() function


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main() function in C

main() function is the entry point of any C program. It is the point at which execution of program is started. When a C program is executed, the execution control goes directly to the main() function. Every C program have a main() function.

Syntax

 void main()
 {
  .........
  .........
 }

In above syntax;

  • void: is a keyword in C language, void means nothing, whenever we use void as a function return type then that function nothing return. here main() function no return any value.
  • In place of void we can also use int return type of main() function, at that time main() return integer type value.
  • main: is a name of function which is predefined function in C library.

Simple example of main()

Example

#include<stdio.h>

void main()
{
printf("This is main function");
}

Output

This is main function

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