read variable to file cpp

To read a variable to a file in C++, you can follow these steps:

1. Include the necessary header files: cpp #include <iostream> #include <fstream>
2. Create a variable to hold the data you want to write to the file: cpp int myVariable = 10;
3. Open the file in output mode using an ofstream object: cpp std::ofstream outputFile("output.txt");
4. Check if the file is open before writing to it: cpp if (outputFile.is_open()) {
5. Write the variable to the file: cpp outputFile << myVariable;
6. Close the file: cpp outputFile.close();