The following is my c++ task. Please keep basic constructs as we are not slowed to use constructs learned in class. We have learned functions and loops of course. But we have not learned classes structures maps etc.

The question indicates that we have to use string function so no void functions.

Thank you

Task D. Decryption Implement two decryption functions corresponding to the above ciphers. When d produced decrypted string is equal to the original plaintext ecrypting ciphertext, ensure that the decryptcaesar(ciphertext, rshift) plaintext decryptvigeneriphertext, keyword) - plaintext As with your other tasks, demonstrate both of these functions in your main function and also provide doctest tests.* Example: s ./decryption Enter plaintext: Hello, world Enter shift 10 Rovvy, Gybvn : Hello, World Ciphertext Decrypterd s Vigenere - Enter keyword : cake Ciphertext Decrypted Jevpq, Wyvnd! : Hello, world (When reporting decrypted strings, they should be the result of applying decryption fun DOLL