strcmp() function implementation

[Sc0rp]

Hey,

How is the strcmp(char*, char*) implemented?
I need to implement it myself for my Comp Science class, and this is what I got:

int strcmp(const char* s1, const char* s2)
{
    const char* p1 = s1 - 1;
    const char* p2 = s2 - 1;

    while (*++p2 == *++p1)
        if (!*p2 || !*p1)
            break;

    if (*p2 > *p1)
        return (-1);
    else if (*p1 > *p2)
        return (1);

    return (0);
} 

But it looks too long and clumsy for such a simple function.


Thanks.