This program is part 1 of a larger program. Eventually, it will have a variety of encryptions that can be applied to contents of a file. For this part, the program gives the user 4 choices for encrypting (or decrypting) the first character of a file. Non- lowercase characters are simply echoed (for everything other than option #4, the hash). The encryption is only performed on lowercase characters. If c is char variable, then islower(c) will return true if c contains an lowercase character, false otherwise To read a single character from a file (let inFile be the name of your ifstream), you can use: inFile.get(c); . This will read one character, even the whitespace characters Choice 1 - No encryption, echo the character from the file Choice 2 - Encrypt by shifting. For example, shifting by 3 characters would change an 'a'to a 'd because that is 3 letters later. If you reach the end of the alphabet then you need to roll over. For example'z plus 3 is c NOTE: The process of converting the 'z'to a'c' should NOT need the use of an if, switch or loop statement. . For this week, you may use an ifor switch if you need, but next week you'll have to do it without o Choice 3 - This is the opposite of choice 2. Instead of moving 3 letters forward, it will move 3 letters backwards. A'd' will become'a. Like choice 2, the shifting can be accomplished without it's, switch's, and loop's. Choice 4 - This will calculate a hash value. You sum the ASCII values of all of the characters and at the end of the file print the last 2 digits of the sum. For example, "abc is 94 because 'a'is 97,'b'is 98.c is 99, which has a sum of 294 . Remember, this week we are only reading a single character Your program should prompt the user for: - The encryption type The name of a file . For this week, the prompt will be very short, just a ? o Your program should output the encrypted characters (or a hash value). o file1.txt has the following contents: yippee o file2.txt has the following contents: A-boa cc 1 TITUUU UULITLULALIJ wilal lleusel types ? 1 file1.txt Sample Run #2 (bold, underlined text is what the user types): ? 2 file1.txt Sample Run #3 (bold, underlined text is what the user types): ? 3 filel.txt Sample Run #4 (bold, underlined text is what the user types): 7.4. 11.txt Sample Run #5 (bold, underlined text is what the user types): ? 1 file.txt Sample Run #6 (bold, underlined text is what the user types): 72 file2.txt Sample Run #7 (bold, underlined text is what the user types): 74 file.txt