$//$ PLACE YOUR NAME HERE

#include using namespace std;

int main$()\{$

char letter $=\text{'}$a$\text{'}$;

while $($letter $!=\text{'}$x$\text{'})\{$

cout $<<$ "Please enter a letter" $<<$ endl;

cin $>>$ letter;

cout $<<$ "The letter you entered is $"<<$ letter $<<$ endl;

$\}$

return $0$; $\}$

Exercise $1$: This program is not user friendly. Run it a few times and explain why.

Exercise $2$: Add to the code so that the program is more user friendly. Exercise $3$: How would this code affect the execution of the program if the

while loop is replaced by a do$-$while loop? Try it and see.