With C++, I wrote a Cryptogram in the second level of computer science to understand a part of Cyber Security. In this program, there are several options. If you choose encryption, you will be asked to select Rot or Cryptogram. If you chose decryption, again, you will be asked to select Rot or Cryptogram. This program will encrypt only alphabet, so number(1,2,3,4,5,6,7,8,9) and symbol (.,{}[]|'#\/) stay same. Moreover, if the input is uppercase letter, it will generate uppercase letter. If the input is lowercase letter, it will generate lowercase letter.