look/cpp/task1.6.cpp

#include <iostream>
#include <iomanip>

int main() {
    double distance;
    double timeInput;
    int minutes, seconds, totalSeconds;
    double speedMps, speedKmph;

    std::cout << "Calculating running speed." << std::endl;
    std::cout << "Enter the length of distance (meters) = ";
    std::cin >> distance;

    std::cout << "Enter time (min.sec) = ";
    std::cin >> timeInput;

    minutes = static_cast<int>(timeInput);
    seconds = (timeInput - minutes) * 100;
    totalSeconds = minutes * 60 + static_cast<int>(seconds);

    speedMps = distance / totalSeconds;
    speedKmph = speedMps * 3.6;

    std::cout << "Distance: " << distance << " m" << std::endl;
    std::cout << "Time: " << minutes << " min " << static_cast<int>(seconds) << " sec = " << totalSeconds << " seconds" << std::endl;
    std::cout << "You were running at speed " << std::fixed << std::setprecision(2) << speedKmph << " km/h" << std::endl;

    return 0;
}