C++文件写入和读取中文字符的方法

#include <iostream>
#include <fstream>
#include <locale>
#include <codecvt>

int main() {
    // 设置本地化环境，支持中文
    std::locale::global(std::locale(""));
    
    // 使用UTF-8宽字符转换
    std::wofstream outFile("data.txt");
    outFile.imbue(std::locale(std::locale(), new std::codecvt_utf8<wchar_t>));

    if (outFile.is_open()) {
        outFile << L"你好，世界！" << std::endl;
        outFile << L"这是一段中文测试。" << std::endl;
        outFile.close();
    }

    std::wifstream inFile("data.txt");
    inFile.imbue(std::locale(std::locale(), new std::codecvt_utf8<wchar_t>));

    if (inFile.is_open()) {
        std::wstring line;
        while (std::getline(inFile, line)) {
            std::wcout << line << std::endl;
        }
        inFile.close();
    }

    return 0;
}

#include <iostream>
#include <fstream>

int main() {
    std::ofstream out("data_utf8.txt");
    if (out.is_open()) {
        out << "你好，C++！" << std::endl;
        out.close();
    }

    std::ifstream in("data_utf8.txt");
    if (in.is_open()) {
        std::string line;
        while (std::getline(in, line)) {
            std::cout << line << std::endl;
        }
        in.close();
    }
    return 0;
}