Question

Java

Did you know you can count on one hand the number of concepts you must be able to express in a programming language to officially say you have a beginner's level of mastery? Really! That's why I call this hands-on "Gimme Five!"

• input/output
• declare (name / space allocation) and initialize (assign value to) variables
• iteration (looping)
• selection (decision / IF-THEN)
• comments

THE CHALLENGE

Your hands-on assignment this week is to write a small program in the NEW LANGUAGE you've chosen to learn that illustrates all FIVE of these concepts.

To fulfill the "comments" concept, do the following:

• insert a comment at the top of your program that states the language you have chosen to learn.
• insert comments elsewhere in the code to point out to me where each of the other concepts is illustrated.

Answer 1

// I have choosen Java Programming language

import java.util.Scanner;

public class EvenNumbers {
public static void main(String[] args) {
   Scanner sc = new Scanner(System.in);
   // here I am reading the input from the user
   /* Input output concept*/
   System.out.println("Enter number ");
   int n=sc.nextInt();
   // iterating till the given and checking if it is even
   // Loop (iteration)
   for(int i=0;i<n;i++){
       // selection
       if(i%2==0){
           System.out.println(i);
       }
   }
}
}