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#
Authors:
Tony Gaddis
Chapter:
Repetition Structures
Exercise:
Algorithm Workbench
Question:9 | ISBN:9780132576376 | Edition: 2

Question

Write code that prompts the user to enter a number in the range of 1 through 100 and validates the input.

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Answer

Complete Python code:

#Prompt and read the user to enter a number 
#in the range of 1 through 100 and 
#validates the input.
while True:
    try:
        inputNumber = int(input("Enter a number between 1 and 100: "))
        if 1 <= inputNumber <= 100:
            break
        else:
            print("Number should be between 1 and 100 (inclusive).")
    except ValueError:
        print("Invalid input. Please enter a number.")

print(inputNumber," is a valid input number.")

Executed Output 1:

Enter a number between 1 and 100: 500
Number should be between 1 and 100 (inclusive).
Enter a number between 1 and 100: -1
Number should be between 1 and 100 (inclusive).
Enter a number between 1 and 100: 50
50  is a valid input number.

Executed Output 2:

Enter a number between 1 and 100: 99
99  is a valid input number.

 

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