C++ 文件读写

    1. #include <iostream>
    2. #include <fstream>
    4. void fileoperation(string filename){
    5.     // 文件写入相关操作
    6.     ofstream outFile;
    7.     outFile.open("info.txt");
    8.     outFile << fixed;
    9.     outFile << "Make and model" << endl;
    10.     outFile << "Year" << endl;
    11.     outFile.close();
    13.     // 文件读取操作
    14.     ifstream inFile;
    15.     inFile.open(filename);
    16.     if (!inFile.is_open()){
    17.         cout << "Could not open the file" << filename << endl;
    18.     }
    20.     string value;
    21.     inFile >> value;
    22.     if (inFile.eof())
    23.         cout << "End of file reached;" << endl;
    24.     else if (inFile.fail())
    25.         cout << "Input terminated by data mismatch." << endl;
    26.     else
    27.         cout << "Input terminated for unknown reason." << endl;
    28.     inFile.close();
    29. }
    31. int main() {
    32.     fileoperation("info.txt");
    33.     return 0;
    34. }