C++

Write a program asking the user to enter a number between 1 and 100. Validate the input. Use a while loop and a counter to print the first 20 multiples of that number. Sample run of program: Enter a number between 1 and 100:

> 102

Invalid input! Enter a number between 1 and 100:

> 3

The first 20 multiples of 3 are 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60