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calculator.html
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calculator.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title> Calculator</title>
<script>
function add() {
var a, b, c;
a = Number(document.getElementById("first").value);
b = Number(document.getElementById("second").value);
c = a + b;
document.getElementById("answer").value = c;
}
function sub() {
var a, b, c;
a = Number(document.getElementById("first").value);
b = Number(document.getElementById("second").value);
c = a - b;
document.getElementById("answer").value = c;
}
function mult() {
var a, b, c;
a = Number(document.getElementById("first").value);
b = Number(document.getElementById("second").value);
c = a * b;
document.getElementById("answer").value = c;
}
function div() {
var a, b, c;
a = Number(document.getElementById("first").value);
b = Number(document.getElementById("second").value);
c = a / b;
document.getElementById("answer").value = c;
}
function pre() {
var a, b, c;
a = Number(document.getElementById("first").value);
b = Number(document.getElementById("second").value);
c = a * b / 100;
document.getElementById("answer").value = c;
}
</script>
</head>
<body>
<p>number 1
<input style="text-align: center; background-color: antiquewhite;" id="first">
</p>
<p>number 2
<input style="text-align: center; background-color: antiquewhite;" id="second">
</p>
<p> Operators
<button style= "background: navajowhite;" onclick="add()">+</button>
<button style= "background: navajowhite;" onclick="sub()">-</button>
<button style= "background: navajowhite;" onclick="mult()">*</button>
<button style= "background: navajowhite;" onclick="div()">/</button>
<button style= "background: navajowhite;" onclick="pre()">%</button>
</p>
<p>Calculate
<input style="text-align: center;background-color: aquamarine; " id="answer">
</p>
</body>
</html>