示例: #include<iostream> using namespace std; #include<fstream> #include<string> void test01() {//创建文件流ifstream ifs;//打开文件 并判断文件是否打开成功ifs.open("test.txt", ios::in);if (!ifs.is_open()){cout << "打开文件失败"<<endl;return;}//读取文件//读取方式1//char buf[1024] = { 0 };//while (ifs >> buf)//{// cout << buf << endl;//}//读取方式二//char buf[1024] = { 0 };//while (ifs.getline(buf, sizeof(buf)))//{// cout << buf << endl;//}//读取方式三//string buf;//while (getline(ifs, buf))//{// cout << buf << endl;;//}//读取方式四//char c;//while ((c = ifs.get()) != EOF)//{// cout << c;//}//关闭文件ifs.close(); } int main() {test01();system("pause");return 0; }