<ctime>
Functions for reading the system clock. time_t is an integer type (usually long). tm is a struct.
clock()/CLOCKS_PER_SEC; // Time in seconds since program started
time_t t=time(0); // Absolute time in seconds or -1 if unknown
tm* p=gmtime(&t); // 0 if UCT unavailable, else p->tm_X where X is:
sec, min, hour, mday, mon (0-11), year (-1900), wday, yday, isdst
asctime(p); // "Day Mon dd hh:mm:ss yyyy\n"
asctime(localtime(&t)); // Same format, local time
Functions for reading the system clock. time_t is an integer type (usually long). tm is a struct.
clock()/CLOCKS_PER_SEC; // Time in seconds since program started
time_t t=time(0); // Absolute time in seconds or -1 if unknown
tm* p=gmtime(&t); // 0 if UCT unavailable, else p->tm_X where X is:
sec, min, hour, mday, mon (0-11), year (-1900), wday, yday, isdst
asctime(p); // "Day Mon dd hh:mm:ss yyyy\n"
asctime(localtime(&t)); // Same format, local time
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