Java Flow Control And Functions If Else | Day 1

Problem:

In computer programming, we use the if statement to control the flow of the program. For example, if a certain condition is met, then run a specific block of code. Otherwise, run another code.

For example:

 class Main {
  public static void main(String[] args) {

    int number = 0;

    // checks if number is greater than 0
    if (number > 0) {
      System.out.println("The number is positive.");
    }

    // checks if number is less than 0
    else if (number < 0) {
      System.out.println("The number is negative.");
    }

    // if both condition is false
    else {
      System.out.println("The number is 0.");
    }
  }
}


Output

The number is 0.

In the above example, we are checking whether the number is positive, negative, or zero.

Here, we have two condition expressions:

• number > 0 - checks if the number is greater than 0
• number < 0 - checks if the number is less than 0

Here, the value of the number is 0. So both the conditions evaluate to false. Hence the statement inside the body of else is executed.

Task:

Given an integer M perform the following conditional actions:

• If M is multiple of 3 and 5 then print "Good Number" (without quotes).
• If M is only multiple of 3 and not of 5 then print "Bad Number" (without quotes).
• If M is only multiple of 5 and not of 3 then print "Poor Number" (without quotes).
• If M doesn't satisfy any of the above conditions then print "-1" (without quotes).

 

Solution:

import java.lang.*;

import java.util.*;

public class Main {

    public static void main(String[] args) {

        /***Don't change the code here***/

        

        Scanner inp  = new Scanner(System.in);

        int M = inp.nextInt();

        inp.close();

        /*********************************/

        

        /**Write your code here**/

        

        if(M%3==0 && M%5==0){

            System.out.println("Good Number");

        }else if(M%3==0)

            System.out.println("Bad Number");

        else if(M%5==0)

            System.out.println("Poor Number");

        else 

            System.out.println(-1);

    }

}