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Ported CHANGE to Javascript

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nanochess
2021-02-19 12:21:49 -06:00
parent b9c7579ee9
commit 59bdbb82e6
2 changed files with 116 additions and 0 deletions
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9
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<html>
<head>
<title>CHANGE</title>
</head>
<body>
<pre id="output" style="font-size: 12pt;"></pre>
<script src="change.js"></script>
</body>
</html>

107
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// CHANGE
//
// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
//
function print(str)
{
document.getElementById("output").appendChild(document.createTextNode(str));
}
function input()
{
var input_element;
var input_str;
return new Promise(function (resolve) {
input_element = document.createElement("INPUT");
print("? ");
input_element.setAttribute("type", "text");
input_element.setAttribute("length", "50");
document.getElementById("output").appendChild(input_element);
input_element.focus();
input_str = undefined;
input_element.addEventListener("keydown", function (event) {
if (event.keyCode == 13) {
input_str = input_element.value;
document.getElementById("output").removeChild(input_element);
print(input_str);
print("\n");
resolve(input_str);
}
});
});
}
function tab(space)
{
var str = "";
while (space-- > 0)
str += " ";
return str;
}
// Main program
async function main()
{
print(tab(33) + "CHANGE\n");
print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
print("\n");
print("\n");
print("\n");
print("I, YOUR FRIENDLY MICROCOMPUTER, WILL DETERMINE\n");
print("THE CORRECT CHANGE FOR ITEMS COSTING UP TO $100.\n");
print("\n");
print("\n");
while (1) {
print("COST OF ITEM");
a = parseFloat(await input());
print("AMOUNT OF PAYMENT");
p = parseFloat(await input());
c = p - a;
m = c;
if (c == 0) {
print("CORRECT AMOUNT, THANK YOU.\n");
} else {
print("YOUR CHANGE, $" + c + "\n");
d = Math.floor(c / 10);
if (d)
print(d + " TEN DOLLAR BILL(S)\n");
c -= d * 10;
e = Math.floor(c / 5);
if (e)
print(e + " FIVE DOLLAR BILL(S)\n");
c -= e * 5;
f = Math.floor(c);
if (f)
print(f + " ONE DOLLAR BILL(S)\n");
c -= f;
c *= 100;
g = Math.floor(c / 50);
if (g)
print(g + " ONE HALF DOLLAR(S)\n");
c -= g * 50;
h = Math.floor(c / 25);
if (h)
print(h + " QUARTER(S)\n");
c -= h * 25;
i = Math.floor(c / 10);
if (i)
print(i + " DIME(S)\n");
c -= i * 10;
j = Math.floor(c / 5);
if (j)
print(j + " NICKEL(S)\n");
c -= j * 5;
k = Math.floor(c + 0.5);
if (k)
print(k + " PENNY(S)\n");
print("THANK YOU, COME AGAIN.\n");
print("\n");
print("\n");
}
}
}
main();