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<html>
<!-- stats.html Dave Reed -->
<!-- This page simulates dice rolls and maintains stats. -->
<!--------------------------------------------------------->
<head>
<title> Dice Stats </title>
<script type="text/javascript"
src="http://www.prenhall.com/reed/random.js">
</script>
<script type="text/javascript">
function RollRepeatedly()
// Assumes: document.DiceForm.reps contains a number
// Results: simulates that many dice rolls, displays # of doubles
{
var doubleCount, totalRolls, repCount, roll1, roll2;
doubleCount = 0; // initialize the counter
totalRolls = parseFloat(document.DiceForm.reps.value);
repCount = 0;
while (repCount < totalRolls) { // repeatedly:
roll1 = RandomInt(1, 6); // simulate the dice rolls
roll2 = RandomInt(1, 6);
if (roll1 == roll2) { // if doubles,
doubleCount = doubleCount + 1; // increment the counter
}
repCount = repCount + 1; // incr. repetition counter
}
document.DiceForm.count.value = doubleCount; // display # doubles
}
</script>
</head>
<body>
<div style="text-align:center">
<h2>Dice Stats</h2>
<form name="DiceForm">
Desired number of rolls =
<input type="text" name="reps" size=6 value=1000 />
<br /><br />
<input type="button" value="Click to Roll" onClick="RollRepeatedly();" />
<br /><br />
Number of doubles obtained =
<input type="text" name="count" size=6 value=0 />
</form>
</div>
</body>
</html>
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