What is this?

>warning: conflicting types for 'something' [enabled by default]

If put the main after the functions this doesn't show up, why?

If you try to call the function before it's declared the compiler will have to guess its types.

You can put just the declaration above main() and put the definition below.



int dicks(int x);

int main(int argc, char **argv){
    if(argc < 2){
        return 1;
    }

    printf("Dicks! :%d\n", dicks(atoi(argv[1])));

    return 0;
}

int dicks(int x){
    int i;
    int j = 0;

    for(i=0; i<x; ++i){
        j += x % i;
    }

    return j;
}