# Java Program to Arithmetic Calculator using switch case Statements

Get a binary arithmetic expression and solve the expression.

Sample Input 1:

12 + 9

Sample Output 1:

21

Sample Input 2:

4 * 5

Sample Output 2:

20

#### Try your Solution

Strongly recommended to Solve it on your own, Don't directly go to the solution given below.

public class Hello
{
public static void main(String args[])
{
//Write your code here
}
}

#### Program or Solution

```
```
import java.util.*;
class Calculator
{
public static void main(String args[])
{
int num1,num2;
double output=0;
char operator;
Scanner sc=new Scanner(System.in);
System.out.println("Enter a Binary Expression:");
num1=sc.nextInt();
operator=sc.next().charAt(0);
num2=sc.nextInt();
switch(operator)
{
case '+':
output=num1+num2;
break;
case '-':
output=num1-num2;
break;
case '*':
output=num1*num2;
break;
case '/':
output=num1/num2;
break;
case '%':
output=num1%num2;
break;
default :
System.out.println("invalid operation");
break;
}
System.out.println("The Output Is:"+output);
}
}

#### Program Explanation

Based on the choice, instructions in any one of the case will be executed.

Break statement very important in switch.

#### Comments

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