help programming this in fortran please thank you.

LAB: Do Loop Practice Write a program that prints the even numbers 2 to 42 to the screen . Write a program that asks the user for a number then counts down to 1 from that numbers then prints 'blast-off' Write a program that asks a user to guess numbers from 1 to 100 until they enter 42. Then it prints 'You Win!' You may use a do while () loop here or an infinite do loop with an if (.....) exit statement . You may write these in a single program but I suggest you compile and run the first one then keep adding to the program. This is a typical way to write more complex programs