I cannot figure out how to nest the functions so that the starts show up exponentially. I keep losing strays. additionally how do i nest the reverse pyramind function and only use one star?

3. Stars Write a program that prints a diagram of the function 2n, as follows. * ** **** ******** **************** ******************************** **************************************************************** ******************************** **************** ******** **** ** * Your program should contain only one * character.

C++