Skip a line while reading a file in C

Question

I have a problem and I haven't found a solution that works. It's really easy, but I don't understand what to do.

I have a file with some lines, like:

#comment

#comment

icecream 5

pizza 10

pie 7

#comment

tortillas 5
fajitas 5

And I want that my program just read the lines that don't start with #.

FILE *pf;
char first [20], second [20];
pf = fopen("config.conf", "r");
if (pf)
{
    while (! feof(pf))
    {
        fscanf(pf, "%s \t ", first);
        while(!strcmp(first,"#")){ `HERE I NEED JUMP TO NEXT LINE`
            fscanf(pf, "%s \t ", first);
        }
        fscanf (pf, "%s \t ", second);
        printf("Food: %s \t Cost: %s \n", first, second);
    }
    fclose(pf);
}
else
    printf( "Errore nell'aprire config.conf\n");

Solution 1

There's no real way to get to the next line without reading the line that starts with the #. About all you can do is read that data, but ignore it.

char ignore[1024];

fgets(ignore, sizeof(ignore), pf);

Solution 2

You can skip to end of line without using a buffer by applying %*[^\n] format specifier:

fscanf(pf, "%*[^\n]");

Solution 3

You might want to use strstr to look for the "#".

See description: http://en.cppreference.com/w/c/string/byte/strstr