Please use C++

Create another main file called shape_main.cp. In this one, the user will be prompted to choose a rectangle or a triangle. Followed by a prompt asking for height and width if it is a rectangle, base instead of width if it is a triangle. Then, it will return the area for the chosen shape and dimensions. shape_main.cpp should perform input validation and reject invalid values (for example, less than 0 or letters for dimension)