length = input ("Please input the length of rectange in cm :") height = input ("Please input the hight of rectange in cm :") if length == " or height == " : print ("no input values") elif length.isdigit() == False or height.isdigit() == False: print("wrong input value") else: result = float(length) * float(height) print(f"result : \n The area of rectangle : \t {result} cm sq")