#include #include #include // TODO: Implement writeToFile() function // - Create an ofstream and open the file // - Check if file is open, return false if not // - Write: "Hello, File!\n", "This is line 2\n", "Numbers: 42 3.14\n" // - Close the file and return true // Example output: // 1 bool writeToFile(const std::string& filename) { return false; } // TODO: Implement readFromFile() function // - Create an ifstream and open the file // - Check if file is open, return false if not // - Read each line and print it // - Close the file and return true // Example output: // Hello, File! // This is line 2 // Numbers: 42 3.14 bool readFromFile(const std::string& filename) { return false; } // TODO: Implement appendToFile() function // - Open file in append mode (std::ios::app) // - Check if file is open, return false if not // - Write the line with newline // - Close and return true // Example output: // (appends to file successfully) bool appendToFile(const std::string& filename, const std::string& line) { return false; } // TODO: Implement printFileContents() function // - Open file for reading // - Read and print each line // - Return success status // Example output: // Hello, File! // This is line 2 // Numbers: 42 3.14 // Appended line bool printFileContents(const std::string& filename) { return false; } int main() { const std::string filename{"test_output.txt"}; std::cout << writeToFile(filename) << '\n'; readFromFile(filename); appendToFile(filename, "Appended line"); std::cout << writeToFile(filename) << '\n'; appendToFile(filename, "Appended line"); printFileContents(filename); return 0; }

Basic File I/O

Success Criteria

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