anyone help me ?

Write a program that request a positive integer as input and then follows this procedure: If the number is even, divide it by 2. If not, multiply the number by 3 and then add 1. Repeat this process with the resulting number and continue repeating until the 1 is reached. After the 1 is reached, the program should display the number of iterations required to reach the number 1 When the program requests input, it should check that the user inputs a positive integer greater than 1. If not, an error message should be generated