Lab 3 : Calculate grade from score

void setup(){
  size(300,200);
  background(255);
}

void draw(){
  draw_score(90,100);
}

void draw_score(int x,int y){
  int score=85;

  fill(0);
  textSize(20);
  text("Your score = "+score,50,50);

    if(score>=80 && score<=100){
      text("Grade A",x,y);
    }else if(score>=70 && score<=79){
      text("Grade B",x,y);
    }else if(score>=60 && score<=69){
      text("Grade C",x,y);
    }else if(score>=50 && score<=59){
      text("Grade D",x,y);
    }else if(score<=49 && score>=0){
      text("Grade F",x,y);
    }else{
      text("Error",x,y);
    }
}