Program $/2$: Upper or Lower?

This program will prompt the user as to whether they wish to view upper or lowercase letters. The user will then enter a response $($for example, the letter $\text{'}$u$\text{'}$ for uppercase or $\text{'}1\text{'}$ for lowercase$).$ So if the user were to select uppercase, the program should then display all the alphabetic letters in uppercase; if the user specifies lowercase, the program should display all the lowercase letters.

In order to test to see which character the user enters at the keyboard, you'll need to test the value of variable and determine what's stored in it$.$ This will require a simple $"$if$\text{'}$ statement, which you can read about beginning on p$\mathrm{.}75.$ An example dealing with an integer is on p$\mathrm{.}76,$ and the syntax mopuirements is on p$\mathrm{.}77.$ It would probsbly be wise to first write some quick throw$-$away code to experiment with if$/$else statements so you hawe a good feeling about them.l

Another restriction on this program $-$ you cant simply display a string literal containing the alphabet! Instesd, you must figure out how to generate the alohabetic display with a "whice" loop. If you're Stuck, read up on the "chare" data type, and also check out the ASCll chart on p$.1038$ in your book, Ssve your code in a file called upper$\_$or$\_$lower,cpp in the HW$03$ subdirectory.

Have fun!