html print not working

Why wont my print(html) work? the statement never appears on my browser screen(chrome):

prompt("Ready to take a three question quiz about the USA? Click OK to proceed.");

// two dimensional array with questions and answers var questions = [ ['How many states are in the United States?', 50], ['How many legs does an octupus have?', 8], ['How many countries are in North America?', 23] ];

var gotRight = 0; var gotWrong = 0; var question; var answer; var response; var html;

function print(message) { document.write(message); }

for (var i = 0; i <= questions.length; i++) {
  question = questions[i][0]; 
  answer = questions[i][1]; 
  response = parseInt(prompt(question));
    if (response === answer) {
      gotRight++; 
    alert("That is correct!"); 
    } else 
      alert("Thats not correct"); 

}

//print how many questions were correctly answered html = "You got " + gotRight + " question(s) right."; print(html);