Julius Caesar protected his confidential information by encrypting it in a cipher. Caesar's cipher rotated every letter in a string by a fixed number, K, making it unreadable by his enemies. Given a string, S, and a number, K, encrypt S and print the resulting string.
The first variable contains the unencrypted string, S.
The second variable contains the integer encryption key, K, which is the number of letters to rotate.
Output will be encoded string.