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

// Base class
class FileHandler {
public:
    virtual void writeFile(const std::string& filename) = 0; // Pure virtual function for writing to a file
    virtual void readFile(const std::string& filename) = 0; // Pure virtual function for reading from a file
};

// Derived class - TextFileHandler
class TextFileHandler : public FileHandler {
public:
    void writeFile(const std::string& filename) override {
        std::ofstream file(filename);
        if (file.is_open()) {
            file << "This is a text file." << std::endl;
            file.close();
            std::cout << "Text data written to file: " << filename << std::endl;
        } else {
            std::cout << "Unable to open file: " << filename << std::endl;
        }
    }

    void readFile(const std::string& filename) override {
        std::ifstream file(filename);
        if (file.is_open()) {
            std::string line;
            std::cout << "Contents of text file " << filename << ":" << std::endl;
            while (getline(file, line)) {
                std::cout << line << std::endl;
            }
            file.close();
        } else {
            std::cout << "Unable to open file: " << filename << std::endl;
        }
    }
};

// Derived class - BinaryFileHandler
class BinaryFileHandler : public FileHandler {
public:
    void writeFile(const std::string& filename) override {
        std::ofstream file(filename, std::ios::binary);
        if (file.is_open()) {
            int data[] = {10, 20, 30, 40, 50};
            file.write(reinterpret_cast<const char*>(data), sizeof(data));
            file.close();
            std::cout << "Binary data written to file: " << filename << std::endl;
        } else {
            std::cout << "Unable to open file: " << filename << std::endl;
        }
    }

    void readFile(const std::string& filename) override {
        std::ifstream file(filename, std::ios::binary);
        if (file.is_open()) {
            int data[5];
            file.read(reinterpret_cast<char*>(data), sizeof(data));
            std::cout << "Contents of binary file " << filename << ":" << std::endl;
            for (int i = 0; i < 5; ++i) {
                std::cout << data[i] << " ";
            }
            std::cout << std::endl;
            file.close();
        } else {
            std::cout << "Unable to open file: " << filename << std::endl;
        }
    }
};

int main() {
    TextFileHandler textHandler;
    BinaryFileHandler binaryHandler;

    textHandler.writeFile("text_file.txt");
    textHandler.readFile("text_file.txt");

    binaryHandler.writeFile("binary_file.bin");
    binaryHandler.readFile("binary_file.bin");

    return 0;
}