User Input to a File

Write a program that prompts the user to enter some text. The program should then write the user's input to a file named input.txt. If the file already exists, the program should overwrite its contents with the new input.

Hint

• Use <fstream> to handle file operations.
• Use the std::ofstream class to create and write to the file.

Answer

#include <iostream>
#include <fstream>
#include <string>

int main() {
    std::string userInput;

    std::cout << "Enter some text: ";
    std::getline(std::cin, userInput);

    // Open the file (this will overwrite any existing content)
    std::ofstream outFile("input.txt");
    if (outFile) {
        outFile << userInput;  // Write user input to the file
        std::cout << "Input saved to input.txt." << std::endl;
    } else {
        std::cerr << "Failed to open input.txt for writing." << std::endl;
    }

    // File is closed automatically when ofstream goes out of scope

    return 0;
}