Powers of 2 - a collaborative program

ASSIGNMENT:

Write a program that asks the user for a number between 1 and 2 0 . The program will then display the powers of 2 up to the number entered. If the number entered is not between 1 and 2 0 , inform the user and re-ask for the number until a number in the range of 1 through 2 0 is entered.

This program will require a loop (use a while loop) to validate the number entered, and will also require a loop (use a for loop) for the powers of two.

Example Run #1: ( bold type is what is entered by the user)

Enter an integer (between 1 and 20): 5

2^ 1 = x 2^2 = x 2^3 = x 2^4 = xx 2^5 = xx

Example Run #2:

Enter an integer (between 1 and 20): 25 The integer entered, 25, is not in the range of 1 to 20. Please re-enter the integer: 5

2^ 1 = x 2^2 = x 2^3 = x 2^4 = xx 2^5 = xx

in C please!! not C+ C++ C#