Write a program that prompts the user to enter an even integer in the twenties. Using logical operators and just one if expression, the program should simply  respond with "Good input" or "Bad input". program3_3.py Write a second version of program3_2 that is not restricted to one if expression. This version should identify good inputs and all possible problems for bad inputs, these being: Not even, too low. Even, too low. Even, too high. Not even, too high. Not even, in range. Good input.

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.