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Question 461
Counter Menu
Counter Menu
A counter starts at 0. Show a four-line menu, 1) Add 1, 2) Subtract 1, 3) Show and 4) Quit, and read the choice with the prompt Choice: , stripped. Choice 1 adds one and prints Count is now <n>., choice 2 subtracts one and prints the same sentence, choice 3 prints Count: <n>, choice 4 prints Goodbye! and leaves the loop, and anything else prints Unknown choice - try again.. Input: one choice per line, ending with 4. The prompt is part of the output, so each message follows Choice: on the same line.
Expected Output:
1) Add 1 2) Subtract 1 3) Show 4) Quit Choice: Count is now 1. 1) Add 1 2) Subtract 1 3) Show 4) Quit Choice: Count is now 2. 1) Add 1 2) Subtract 1 3) Show 4) Quit Choice: Count is now 1. 1) Add 1 2) Subtract 1 3) Show 4) Quit Choice: Count: 1 1) Add 1 2) Subtract 1 3) Show 4) Quit Choice: Goodbye!
= newline. The output ends with a newline — print one after the last line.
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