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calculator.txt
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********************************************************************
HTML File
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator</title>
<link rel="stylesheet" href="style2.css">
</head>
<body>
<div class="calculator">
<div class="display">
<input type="text" id="result" readonly>
</div>
<div class="buttons">
<button class="number" onclick="appendToDisplay('7')">7</button>
<button class="number" onclick="appendToDisplay('8')">8</button>
<button class="number" onclick="appendToDisplay('9')">9</button>
<button class="operator" onclick="appendToDisplay('+')">+</button>
<button class="number" onclick="appendToDisplay('4')">4</button>
<button class="number" onclick="appendToDisplay('5')">5</button>
<button class="number" onclick="appendToDisplay('6')">6</button>
<button class="operator" onclick="appendToDisplay('-')">-</button>
<button class="number" onclick="appendToDisplay('1')">1</button>
<button class="number" onclick="appendToDisplay('2')">2</button>
<button class="number" onclick="appendToDisplay('3')">3</button>
<button class="operator" onclick="appendToDisplay('*')">*</button>
<button class="number" onclick="appendToDisplay('0')">0</button>
<button class="operator" onclick="clearDisplay()">C</button>
<button class="operator" onclick="calculate()">=</button>
<button class="operator" onclick="appendToDisplay('/')">/</button>
</div>
</div>
<script src="script.js"></script>
</body>
</html>
************************************************************************************
css File
body {
font-family: Arial, sans-serif;
background-color: #f0f0f0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.calculator {
background-color: #fff;
border: 1px solid #ccc;
border-radius: 5px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
width: 300px;
text-align: center;
}
.display {
padding: 10px;
border-bottom: 1px solid #ccc;
}
input[type="text"] {
width: 100%;
padding: 5px;
font-size: 24px;
border: none;
outline: none;
}
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
}
button {
padding: 10px;
font-size: 18px;
border: none;
cursor: pointer;
}
.number {
background-color: #f0f0f0;
}
.operator {
background-color: #f0f0f0;
color: #ff6600;
}
************************************************************************
Java Script File
let displayValue = '';
function appendToDisplay(value) {
displayValue += value;
document.getElementById('result').value = displayValue;
}
function clearDisplay() {
displayValue = '';
document.getElementById('result').value = '';
}
function calculate() {
try {
displayValue = eval(displayValue);
document.getElementById('result').value = displayValue;
} catch (error) {
document.getElementById('result').value = 'Error';
}
}