文件操作

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main() {
    // 写入文件
    ofstream outFile("example.txt");
    if (outFile.is_open()) {
        outFile << "Hello, World!" << endl;
        outFile << "这是第二行" << endl;
        outFile.close();
    } else {
        cerr << "无法打开文件!" << endl;
    }
    
    // 读取文件
    ifstream inFile("example.txt");
    if (inFile.is_open()) {
        string line;
        while (getline(inFile, line)) {
            cout << line << endl;
        }
        inFile.close();
    }
    
    // 文件打开模式
    ofstream outFile2("binary.dat", ios::binary | ios::out);
    ifstream inFile2("text.txt", ios::in);
    
    // 检查文件状态
    if (inFile2.good()) {
        cout << "文件状态正常" << endl;
    }
    if (inFile2.eof()) {
        cout << "到达文件末尾" << endl;
    }
    if (inFile2.fail()) {
        cout << "操作失败" << endl;
    }
}