凯撒加密c++23 abc4 yz

#include #include using namespace std;

string caesarCipher(string text, int shift) { string result = "";

// Loop through each character in the text
for (int i = 0; i < text.length(); i++) {
    // Check if the character is a letter
    if (isalpha(text[i])) {
        // Shift the character by the shift amount
        char shiftedChar = text[i] + shift;

        // Check if the shifted character is out of range
        if ((isupper(text[i]) && shiftedChar > 'Z') || (islower(text[i]) && shiftedChar > 'z')) {
            shiftedChar -= 26; // Wrap around to the beginning of the alphabet
        }

        result += shiftedChar;
    }
    else {
        result += text[i]; // Non-letter character, add it as is
    }
}

return result;

}

int main() { int shift; string text;

// Get the shift amount from the user
cout << "Enter the shift amount: ";
cin >> shift;

// Get the text to encrypt from the user
cout << "Enter the text to encrypt: ";
cin.ignore(); // Ignore the newline character left by the previous input
getline(cin, text);

// Encrypt the text using the Caesar cipher
string encryptedText = caesarCipher(text, shift);

// Output the encrypted text
cout << "Encrypted text: " << encryptedText << endl;

return 0;