c++ programming. if you would please write some comments to explain how it was solved. thank you!

Suppose a, b and c denote the lengths of the sides of a triangle. Then the area of the triangle can be calculated using the formula: s (s-a)(s b)(s - c) where s = (1/2)(a + b + c). Write a program with at least four functions that uses this formula to find the area of a triangle. Design a sensible input prompt and informative output. You can