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- // program for a simple calculator
- let result;
- // take the operator input
- const operator = prompt('Enter operator ( either +, -, * or / ): ');
- // take the operand input
- const number1 = parseFloat(prompt('Enter first number: '));
- const number2 = parseFloat(prompt('Enter second number: '));
- switch(operator) {
- case '+':
- result = number1 + number2;
- console.log(`${number1} + ${number2} = ${result}`);
- break;
- case '-':
- result = number1 - number2;
- console.log(`${number1} - ${number2} = ${result}`);
- break;
- case '*':
- result = number1 * number2;
- console.log(`${number1} * ${number2} = ${result}`);
- break;
- case '/':
- result = number1 / number2;
- console.log(`${number1} / ${number2} = ${result}`);
- break;
- default:
- console.log('Invalid operator');
- break;
- }
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