Design an algorithm that will read two numbers and an integer code from the screen. The value of the integer code shold be 1,2,3 or 4. If the value of the code is 1, compute the sum or the two numbers. If the code is 2, compute the difference (first minus second). If the code is 3, compute the product of the two numbers. If the code is not equal to 1,2,3 or 4, display an error message. The program is then to display the two numbers, the integer code and the computed results to the screen.