Thread: help with function args

Code:

#include <stdio.h>

int check(int a)
{
        FILE * Tmp;
        if ( ( Tmp = fopen(a, "r+") ) == 0 )
        {
                printf("no");
        }
        else
        {
                printf("yes");
        }
        fclose(Tmp);
        return 0;
}

int main()
{
        check("read.txt");
        return 0;
}

Passing argument 1 of fopen function makes pointer from integer without a cast.

This was only a warning from the compiler. This works, but why am I getting the warning? I was trying to put the same concept as the following into a file existance check....

Code:

int display_message(int a)
{
        printf("The color you have chose is %s", a);
        printf("Bla bla bla...");
        return 0;
}

Oh, I see. Thanks Salem.