Question

How to format time hours-minutes-seconds in C++

Answer 1

#include <iostream>
#include <iomanip> // For std::setw and std::setfill

int main() {
    int hours = 9, minutes = 36, seconds = 7;

    // Format and print time as HH:MM:SS
    std::cout << std::setw(2) << std::setfill('0') << hours << ":"
              << std::setw(2) << std::setfill('0') << minutes << ":"
              << std::setw(2) << std::setfill('0') << seconds << std::endl;
}



/*
run:

09:36:07

*/

 

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Answer 2

#include <iostream>
#include <iomanip>
#include <ctime>

int main() {
    // Create a tm struct with the desired date and time
    std::tm date = {};
    date.tm_year = 2024 - 1900; // Years since 1900
    date.tm_mon  = 12 - 1;      // Months since January
    date.tm_mday = 10;
    date.tm_hour = 15;
    date.tm_min  = 21;
    date.tm_sec  = 42;

    // Format the time as HH:mm:ss
    std::cout << std::put_time(&date, "%H:%M:%S") << std::endl;
}




/*
run:

15:21:42

*/

 

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