/* Write a JavaScript program to find the area of a triangle where lengths of the three of its sides are 5, 6, 7.
*/

var num;
function question () {
  num = prompt("Pick a number between 1-100");
  num = parseInt(num);
  if (num > 100) {
    alert("To big a number \ntry again");
  } else if (num < 1) {
      alert("To small a number \ntry again");
    }
  }

var a = question();
var b = question();
var c = question();

var perimeter = (a + b + c)/2;
var area =  Math.sqrt(perimeter*((perimeter-a)*(perimeter-b)*(perimeter-c)));
alert("Answer is: " + area);