Thread: question on void

what exactly does void do? i have seen it used in the tutorials but cant find where it explains it.

eg:

Code:

#include <stdio.h>

void playgame();
void loadgame();
void playmultiplayer();
	
int main()
{
    int input;

    printf( "1. Play game\n" );
    printf( "2. Load game\n" );
    printf( "3. Play multiplayer\n" );
    printf( "4. Exit\n" );
    printf( "Selection: " );
    scanf( "%d", &input );
    switch ( input ) {
        case 1:            /* Note the colon, not a semicolon */
            playgame();
            break;
        case 2:          
            loadgame();
            break;
        case 3:         
            playmultiplayer();
            break;
        case 4:        
            printf( "Thanks for playing!\n" );
            break;
        default:            
            printf( "Bad input, quitting!\n" );
            break;
    }
    getchar();

}

from the tutorials

or similiar or other uses, i really dont understand what it does.

thanks

It means, when you call a function, you can do this
loadgame();

Whereas if the function returned anything other than void, you would normally want to do this
anAnswer = loadgame();

You use functions of the type 'void' if you don't need an output value. For example if you have a function that only prints some text to the screen, you would use type 'void', because you don't need a return value.

thanks a heap. all u ppl here are really helpful.