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Monday, February 4, 2019

Switch case program in java

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Today i will dicuss you how to make switch case program in java . switch case is mulit way conditional statement that work like if else nested loop, .
What is switch Case?
Switch case is a multi-way conditional statement. It Works like as if else if nested conditional statement.But the Advantage of using Switch case over if else if nested conditional statement Management of switch case is easy

See Switch case example below that how work switch statement:

switch case program in java

import java.util.Scanner;
public class switchdemo {

    public static void main(String args[]) {
        double a, b, r;
        String c;
        Scanner in = new Scanner(System.in);
        System.out.println("Enter two Numbers to Calculate");

        a = in.nextDouble();
        b = in.nextDouble();
        System.out.println("Please Select a oprtater +, -, *, /");
        c = in.next();
        switch (c) {
            case "+":
                r = a + b;
                System.out.println(a + " + " + b + " = " + r);
                break;
            case "-":
                r = a - b;
                System.out.println(a + " - " + b + " = " + r);
                break;
            case "*":
                r = a * b;
                System.out.println(a + " * " + b + " = " + r);
                break;
            case "/":
                r = a / b;
                System.out.println(a + " / " + b + " = " + r);
                break;
            default:
                System.out.println("Enter valid operator\n");
                break;
        }
    }
}


Output: Enter two Numbers to Calculate
        5
        4
        Please Select a oprtater +, -, *, /
        *
        5.0 * 4.0 = 20.0


     
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