runoob_28_locale

/*
 * @Author: by777
 * @Date: 2025-03-24 20:17:40
 * @LastEditors: by777
 * @LastEditTime: 2025-03-24 20:20:43
 * @FilePath: /cxx_stl/runoob_28.cpp
 * @Description: https://www.runoob.com/cplusplus/cpp-libs-locale.html
 * 
 * Copyright (c) 2025 by by777, All Rights Reserved. 
 */
#include <iostream>
#include <locale> //locale 类提供了一种机制来控制程序的本地化行为，特别是与语言和文化相关的格式设置和转换操作
using namespace std;
int main(int argc, const char** argv) {
    std::locale loc("en_US.UTF-8"); //设置为美国英语
    std::cout.imbue(loc);//设置cout的locale
    double num = 1234567.89;
    std::cout<<"Formatted num: "<<num<<endl;
    {
        std::locale loc("en_US.UTF-8");
        std::cout.imbue(loc);

        std::time_t now = std::time(nullptr);
        std::tm* timeinfo = std::localtime(&now);

        char buffer[100];
        std::strftime(buffer, sizeof(buffer), "%A, %B %d, %Y", timeinfo);
        std::cout << "Current date: " << buffer << std::endl;
    }
    return 0;
}