CISC 1110 Lab 21
Write a complete C++ program that uses char functions. Be sure to include
Declare a string variable and give it a value that is a combination of capital letters, lowercase letters, digits, and punctuation. Print the string.
Then, in a loop, process the string, character by character. (First, find the length of the string and use the length as the limit of the loop.)
Inside the loop, if the character is a lowercase letter, change it to a capital. If it is a capital letter, change it to lowercase. If the characters is a digit, add 1 to it. If the character is a piece of punctuation, subtract 1 from it. When you are finished, print the resulting string.