Question

I implemented myPrintf function:

int myPrintf(const char* format,...)
{
    va_list args;
    va_start(args, format);
    int ret = vprintf (format, args);
    fflush(stdout);
    va_end (args);
    return ret;
}

When I run the function with format = “%ld,%ld”
and the args representation as set of chars is 78,97,188,0,0,0,0,0,120,10,227,5,0,0,0,0
the output printed to stdout is 12345678,0.Instead of 12345678,98765432.
What could be the problem?And how could it be solved?

Answer 1

Because, like on ideone, your longs are 32 bits
http://ideone.com/jjafU

If you use "%lld" for 64-bit values, it works as you expect
http://ideone.com/BYTaa