[c-prog] i'm a newbie

[gIe - papilon]

i started to learn C programming..

i had some question

example :

#include<stdio.h>    /* what the function of #include?*/

int main()           /* what's int main() purpose? */
{
printf('gf');
return 0;            /* why must be return 0 ? not return 1 or x */
}

thanks for your answer..