C++：字符串和整型之间的异或运算

#include <iostream>
#include <string>

std::string xorEncrypt(const std::string& message, int key) {
    std::string encryptedMessage = message;
    for (char& c : encryptedMessage) {
        c ^= key;
    }
    return encryptedMessage;
}

std::string xorDecrypt(const std::string& encryptedMessage, int key) {
    return xorEncrypt(encryptedMessage, key);  // 异或运算的性质使得解密与加密过程相同
}

int main() {
    std::string message = "Hello, World!";
    int key = 42;

    std::string encrypted = xorEncrypt(message, key);
    std::cout << "Encrypted message: " << encrypted << std::endl;

    std::string decrypted = xorDecrypt(encrypted, key);
    std::cout << "Decrypted message: " << decrypted << std::endl;

    return 0;
}