Parthibha R.

Void main() is used for programming languages. It is a return type.

Void main () doesn't return any values.

Let's take one example to clear the difference between int main(), void main() and main().

• int main()
• {
• printf("Hello world\n");
• exit(0); 
• } 

The fact that exit function returns nothing to the calling process, this code will generate the warning:- "control reaches the end of the int-valued function without returning a value" or "expected declaration or statement at the end of the input".

Consider one more example.

[code]

main()

{

printf("Hello world\n");

}

[/code]

Again, the compiler will generate the same error as above and though it's completely appropriate. Sometimes, Programmers thinks that Program isn't going to run in the environment where the status of return matter.

In either of the above case, warnings can be shut by declaring the void as return type.

• void main() 
• { 
• printf("Hello world\n"); 
• }

The only purpose of using void is to shut the warning message off.