string compare with human readable diff

string-compare-human.cpp

bool stringsCompare(const std::string& a, const std::string& b)
{
    for (int i = 0; i < a.size() && i < b.size(); ++i)
    {
        if (a[i] != b[i])
        {
            fprintf(stderr, "At index %i: %c != %c\n", i, a[i], b[i]);
            return false;
        }
        else
        {
            fprintf(stderr, "%c", a[i]);
        }
    }
    return a == b;
}