Problem Statement

Write a program where the program chooses a number between   1   and   10. A player is then prompted to enter a guess.   If the player guesses wrong,   then the prompt appears again until the guess is correct. When the player has made a successful guess the computer will issue a   "Well guessed!"   message,   and the program exits. A   conditional loop   may be used to repeat the guessing until the user is correct.

Let's start with the solution:

go =>
  N = random(1,10),
  do print("Guess a number: ")
  while (read_int() != N),
  println("Well guessed!").

go2 =>
  N = random(1, 10),
  repeat,
  print('Guess the number: '),
  N = read_int(),
  println("Well guessed!"),
  !.