#include <iostream>
#include <fstream>
#include <string>
 
void appendToFileWithFlush(const std::string& filePath, const std::string& content) {
    // 打开文件流
    std::ofstream outFile;
 
    // 设置文件路径和模式
    outFile.open(filePath, std::ios::app);
 
    // 检查文件是否成功打开
    if (!outFile.is_open()) {
        std::cerr << "无法打开文件：" << filePath << std::endl;
        return;
    }
 
    // 写入内容
    outFile << content;
 
    // 强制刷新缓冲区，确保数据立即写入文件
    outFile.flush();
 
    // 关闭文件流
    outFile.close();
}
 
int main() {
    std::string filePath = "example.txt"; // 文件路径
    std::string content = "这是追加的内容。\n"; // 要写入的内容
 
    // 调用函数追加内容到文件
    appendToFileWithFlush(filePath, content);
 
    std::cout << "内容已追加到文件：" << filePath << std::endl;
 
    return 0;
}
 
 
 

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