Xor Eq In C++

In this guide, you will explore the Xor_eq operation in C++ along with illustrative examples.

The eleven reserved words in C++ are essentially alternative representations of terms typically represented by alphanumeric characters. These reserved words are also effectively managed during the preprocessing stage. They are not classified as identifiers or directives; rather, they function as operators in conditional directives like #if. To convert these reserved words to C++, you can include the iso646.h header in your C++ program. Each keyword in the header is defined as a macro that expands to the corresponding punctuation symbols.

The following are the designated operators along with the respective punctuators:

• ✅ and &&
• ✅ and_eq &=
• ✅ bitand &
• ✅ bitor |
• ✅ compl ~
• ✅ not!
• ✅ not_eq !=
• ✅ or ||
• ✅ or_eq |=
• ✅ xor ^
• ✅ xor_eq ^=

XOR(^):

• ✅ A bitwise XOR operation is performed between the two operands using the XOR operation (^).
• ✅ In the case where two bits do not match, the result is 1. If the two bits are equal, the result is 0.
• ✅ For example, 1010 ^ 1100 gives 0110 (10 XOR 12 equals 6).

Assignment operators for XOR (^=):

• ✅ By combining the left and right operands bittwise, the XOR function operator (^=) assigns the result to the left operand.
• ✅ In this case, lhs is the left operand and rhs is the right operand. It is equivalent to lhs = lhs ^ rhs.
• ✅ For example, a ^= b; and a = a^b; They are perfect.

Program 1:

Let's consider a scenario to demonstrate the Xor_eq function in C++.

#include <iostream>
using namespace std;
int main() {
    int a = 10;
    int b = 7;
    a ^= b;  // Equivalent to a = a ^ b;
    cout << "a after XOR: " << a << endl;
    return 0;
}

Output:

Program 2:

Let's consider another instance to demonstrate the Xor_eq function within C++.

#include <iostream>
#include <string>
using namespace std;
string xor_encrypt_decrypt(const string& input, const string& key) {
    string output;
    for (size_t i = 0; i < input.length(); ++i) {
        output += input[i] ^ key[i % key.length()];
    }
    return output;
}
int main() {
    string plaintext, key;
    cout << "Enter plaintext: ";
    getline(cin, plaintext);
    cout << "Enter key: ";
    getline(cin, key);
    // Encryption
    string ciphertext = xor_encrypt_decrypt(plaintext, key);
    cout << "Encrypted: " << ciphertext << endl;
    // Decryption
    string decrypted = xor_encrypt_decrypt(ciphertext, key);
    cout << "Decrypted: " << decrypted << endl;
    return 0;
}

Output: