runoob_15_chrono

/*
 * @Author: by777
 * @Date: 2025-03-24 11:46:51
 * @LastEditors: by777
 * @LastEditTime: 2025-03-24 11:52:12
 * @FilePath: /cxx_stl/runoob_15.cpp
 * @Description: https://www.runoob.com/cplusplus/cpp-libs-chrono.html
 * 
 * Copyright (c) 2025 by by777, All Rights Reserved. 
 */
#include <iostream>
#include <chrono> // 是 C++ 标准库中处理时间相关操作的核心部分。

using namespace std;
void someFunction() {
    // 模拟一些操作
    // std::this_thread::sleep_for(std::chrono::seconds(1));
}
int main(int argc, const char** argv) {
    auto start = std::chrono::high_resolution_clock::now();
    someFunction();
    auto end = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
    std::cout << "Function took " << duration.count() << " milliseconds to execute." << std::endl;

    auto now = std::chrono::system_clock::now();
    std::time_t now_c = std::chrono::system_clock::to_time_t(now);

    std::cout << "Current date and time: " << std::ctime(&now_c);
    return 0;
}