Exercise $1$: Run the program several times with various inputs.

Exercise $2$: Notice the following do$-$while loop which appears near the end of the program:

do

$\{$

cout $<<$ "Would you like to find the average for another month?"; cout $<<$ endl $<<$ "Enter Y or N$"<<$ endl;

cin $>>$ choice;

$\}$ while$($toupper$($choice$)!=\text{'}$Y$\text{'}$ && toupper$($choice$)!=\text{'}$N$\text{'})$;

How would the execution of the program be different if we removed this loop? Try removing the loop but leave the following lines in the program:

cout $<<$ "Would you like to find the average for another month?"; cout $<<$ endl $<<$ "Enter Y or N$"<<$ endl;

cin $>>$ choice;

Record what happens when you run the new version of the program.

Exercise $3$: Alter program case$\_$convert.cpp so that it performs the same task but uses tolower rather than toupper.