Submit three c++ files:

1. Write a program that prompts the user to input a number. The program should then output the number and a message saying whether the number is positive, negative, or zero.

********************************************************************************************************************************************

2. Write a program that prompts the user to input three numbers. The program should then output the numbers in ascending order.

******************************************************************************************************************************************** 3. In a right triangle, the square of the length of one side is equal to the sum of the squares of the lengths of the other two sides. Write a program that prompts the user to enter the lengths of three sides of a triangle and then outputs a message indicating whether the triangle is a right triangle.