Grade Calculator

// PSC:1.0 GradeCalculator
// Description: Turns a score out of 100 into a letter grade

BEGIN GradeCalculator
  INPUT "Enter the score (0-100): " score
  IF score < 0 OR score > 100
    OUTPUT "Invalid score"
  ELSE IF score >= 80
    OUTPUT "Grade: A"
  ELSE IF score >= 70
    OUTPUT "Grade: B"
  ELSE IF score >= 60
    OUTPUT "Grade: C"
  ELSE IF score >= 50
    OUTPUT "Grade: D"
  ELSE
    OUTPUT "Grade: F"
  END IF
END