DIRECTIONS\ Write a program and name it lab3c.cpp.\ Define a character variable and initialize it to the letter '

n

';\ Define an integer variable and initialize it to zero.\ Add a while loop that will repeat until the letter they enter is '

y

' or they correctly calculated

4+18

. Both conditions must be true for the loop to quit.\ The following code should happen inside the loop:\ ask the user "Please enter a letter."\ Read in their letter.\ Print out the letter they entered.\ Ask the user for the result of the calculation of

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.\ SAMPLE OUTPUT\ What do you get if you. add

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? 20\ Enter the letter '

y

' if you want to quit.\ Y\ The letter you entered is

y

\ oh goat foot! You forgot how to add!\ What do you get if you add

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? 22\ Enter the letter '

y

' if you want to quit.\ n\ The letter you entered is

n

\ What do you get if you add

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? 22\ Enter the letter '

y

' if you want to quit.\ Y\ The letter you entered is y