Confusion about sscanf

Question

I want to read floats (and ints afterwards) from a line I'm getting out of a file. When I'm debugging it, I can see it's getting the line out of the file no problem, but when I try to sscanf it, I'm getting garbage. Here's my code:

    while(fgets(line, 1000, file) != EOF)
    {
        //Get the first character of the line
        c = line[0];

        if(c == 'v')
        {
            sscanf(line, "%f", &v1);
            printf("%f", v1);
        }
    }

The value stored in v1 is garbage. Why is this not working, and how can I get floats and ints out of this line?

Answer 1

You're including the first character (which is 'v') in the call to sscanf, so the call is failing and v1 is left untouched (with garbage in it). Try this instead:

sscanf(line+1, "%f", &v1);

Answer 2

Presumably v1 is a float?

In which case printing a float in memory as if it was a 'c' string is going to be bad..
You might want to try printf("%f",v1);

    if(c == 'v')
    {
        sscanf(line, "%f", &v1);

If line starts with 'v' then you are sending that to scanf and asking it to convert it into a float? You probably want to move on a character (or more if you have other padding) and then start reading the float at line[1]?