C code, help with the last function only (valid_character)!! The valid characters are *, %, and # only.

You must have a function called draw_rectangle that has width, length, and a character as parameters. The function prints a rectangle based on the provided information. The function will return 0 if any parameter is invalid (no figure printing will take place in this case). The function will return 1 if printing took place. You must have one function called draw_triangle that has size and a character as parameters. The fune tion prints a triangle based on the provided information. The function will retum 0 if any parameter is invalid (no figure printing take place) and 1 otherwise. 2 You must have a function called valid character that determines whether a character used while drawing a rectangle or triangle is valid or not