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calculator.java
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calculator.java
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//this program performs mathematical operations(add,subtract,divide,multiply) using switch cases
import java.util.Scanner;
public class calculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter first number: ");
double number1 = scanner.nextDouble();
System.out.println("Choose an operator (+, -, *, /): ");
char operator = scanner.next().charAt(0);
System.out.println("Enter second number: ");
double number2 = scanner.nextDouble();
double result;
switch (operator) {
case '+':
result = number1 + number2;
break;
case '-':
result = number1 - number2;
break;
case '*':
result = number1 * number2;
break;
case '/':
if (number2 == 0) {
System.out.println("Error: Division by zero");
return;
}
result = number1 / number2;
break;
default:
System.out.println("Invalid operator");
return;
}
System.out.println(number1 + " " + operator + " " + number2 + " = " + result);
scanner.close();
}
}