b) Draw a flowchart that calculates the arithmetic factorial function, which is defined as: factorial (x) = x * (x-1) * (x-2)* ... * 1. According to the next assumptions: 1) Get x as input. 2) Calculate the factorial. 3) Print the result. Check the correctness of your proposed flowchart by examining the result on the value of factorial(4) according to your flowchart steps