Algorithm that takes a number as input then gives an output saying whether the number is odd or even?

Answer 1

Allow input of a number, if it is not an integer then ask for a different number. When the number is an integer [no fraction] divide it by 2 and specify a remainder value to be retained. If the remainder is zero then the number is even and output an appropriate message, otherwise a non-zero remainder indicates the number is odd and output a relevant message saying that