C / C++ / MFC

string laceStrings(const string& s1, const string& s2)
{
    if (s1.empty())
        return s2;
    if (s2.empty())
        return s1;

    string laced;
    laced.resize(s1.size() + s2.size());

    int i = 0, pos = 0;
    int size = std::min(s1.size(), s2.size());

    // interlace common lengths substrings
    for ( ; i < size; ++i)
    {
        laced[pos++] = s1[i];
        laced[pos++] = s2[i];
    }

    // append the remainder of longer string
    if (s1.size() >= s2.size())
        for ( ; i < s1.size(); ++i)
            laced[pos++] = s1[i];
    else
        for ( ; i < s2.size(); ++i)
            laced[pos++] = s2[i];

    return laced;
}

void logRealClock(void)
{
   volatile int second;
   volatile int minute;
   volatile int hour;
   
   second = globalDate->second;
   minute = globalDate->minute;
   hour = globalDate->hour; 
   ....
   checkTime(second,minute,hour);
   ...
   globalRTC_REG.second = second;
   globalRTC_REG.minute = minute;
   globalRTC_REG.hour = hour;   

}