I really need help! to make a quiz

Processing Coding Questions
3

i understand it might be too much,
but just take a look to see that there are some other possible

  • program structures
  • ways like array…

to do that:
( example)

String[] questions  ={
  "start text", 
  "qa\n[a] bla\n[b] blb\n[c] blc", 
  "qb\n[a]\n[b]\n[c]", 
  "qc\n[a]\n[b]\n[c]", 
  "end"};
String[] goodanswers={
  "n.a.", 
  "a", 
  "c", 
  "b", 
  "n.a."};
int q=0, grade=0, gambler = 0;

void setup() {
  size (500, 500);
  println("mouse click: LEFT: next question, RIGHT: start again");
  println("key: [a],[b], ... as indicated in the questions");
}

void draw() {
  background(200, 200, 0);
  fill(0,200,200); // text color
  textSize(25);
  text(questions[q], 10, 20);
  fill(0,200,0); // text color
  textSize(15);
  if ( grade > 0 ) text("grade: "+grade+" fails: "+gambler, width - 200, height - 20);
}

void mousePressed() {
  if ( mouseButton == LEFT ) q++;
  if ( q > 4 ) exit();
  if ( mouseButton == RIGHT ) q = 0;
}

void keyPressed() {
  //println("key: "+key+" keyCode "+keyCode);
  if ( goodanswers[q].equals(str(key)) ) { 
    println("++ ha, expert");
    grade++;
    q++;
  } else { 
    println("-- bad guess, try again or skip with mouse LEFT click");
    gambler++;
  }
}