A simple ROT encryption can be used to obfuscate a string of characters by adding a umber to each character, called the key. Here is a Ct function definition for the function sacsyntKTO The function uses pass by reference, and forces the encrypted string to remain in the ASCII printable character range // Preconditions: string s, int key. Post conditions: encrypted a void encryptROT (string& s, int key) for (int = 0;