实例 C++ 文件 - 创建、写入和读取文件

#include <iostream>

#include <fstream>

#include <string>

using namespace std;

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int main () {

  // Create a text file

  ofstream MyWriteFile("filename.txt");

​

  // Write to the file

  MyWriteFile << "Files can be tricky, but it is fun enough!";

  // Close the file

  MyWriteFile.close();

​

  // Create a text string, which is used to output the text file

  string myText;

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  // Read from the text file

  ifstream MyReadFile("filename.txt");

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  // Use a while loop together with the getline() function to read the file line by line

  while (getline (MyReadFile, myText)) {

    // Output the text from the file

    cout << myText;

  }

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  // Close the file

  MyReadFile.close();

}

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