Description

In this program, user will enter operator(+,-,*,/) and two operands.
It will give output based on entered operator.

C/C++

/* C Program of Simple Calculator using switch*/
//Save it as SimpleCalculator.c

#include<stdio.h>
int main(){

    double num1, num2;
    char op;

    printf("Enter the operation(+,-,x,/) : ");
    scanf("%c",&op);

    printf("Enter first number : ");
    scanf("%lf",&num1);

    printf("Enter second number : ");
    scanf("%lf",&num2);

    switch(op){
    case '+':
        printf("Summation of %.2lf and %.2lf : %.2lf",num1,num2,num1+num2);
        break;
    case '-':
        printf("Substraction of %.2lf and %.2lf : %.2lf",num1,num2,num1-num2);
        break;
    case '*':
        printf("Multiplication of %.2lf and %.2lf : %.2lf",num1,num2,num1*num2);
        break;
    case '/':
        printf("Division of %.2lf and %.2lf : %.2lf",num1,num2,num1/num2);
        break;
    default:
        printf("Invalid operator");
    }

    return 0;
}

Input:
Enter the operation(+,-,x,/) : +
Enter first number : 5
Enter second number : 6

Output:
Summation of 5.0 and 6.0 : 11.0

Java

/* Java Program of Simple Calculator using switch*/
//Save it as SimpleCalculator.java

import java.io.*;
import java.util.Scanner;

public class SimpleCalculator {

    public static void main(String[] args) {

            Scanner scanner = new Scanner(System.in);
        
            double num1, num2;
        char op;

        System.out.println("Enter the operation(+,-,x,/) : ");
        op = scanner.next().charAt(0);

        System.out.println("Enter first number : ");
        num1 = scanner.nextDouble();

        System.out.println("Enter second number : ");
        num2 = scanner.nextDouble();

        switch(op){
        case '+':
            System.out.println("Summation of "+num1+" and "+num2+" : "+(num1+num2));
            break;
        case '-':
        	System.out.println("Substraction of "+num1+" and "+num2+" : "+(num1-num2));
            break;
        case '*':
        	System.out.println("Multiplication of "+num1+" and "+num2+" : "+(num1*num2));
            break;
        case '/':
        	System.out.println("Division of "+num1+" and "+num2+" : "+(num1/num2));
            break;
        default:
            System.out.println("Invalid operator");
        }
    }
}

Input:
Enter the operation(+,-,x,/) : 
+
Enter first number : 
5
Enter second number : 
6

Output:
Summation of 5.0 and 6.0 : 11.0

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