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Java Program to print Even numbers till N

Get input n and print n even numbers.

Sample Input 1:

7

Sample Output 1:

2 4 6 8 10 12 14

Program or Solution

					    
							
import java.util.*;
class NEven
 {
    public static void main(String args[])
    {
          int i,j,lim;
          System.out.println("Enter The Value Of N");
          Scanner sc=new Scanner(System.in);
          lim=sc.nextInt();
          System.out.println("The N Even Numbers: ");
          for(j=1,i=2;j<=lim;i=i+2,j++)
              {
                   System.out.println(""+i);
              }
    }
}
					    
					

Program Explanation

Instruction(s) inside the for block{} are executed repeatedly till the second expression (j<=lim) is true.

Here i and j are initialized to 2 and i is incremented by 1 and j is incremented by 1.

for each iteration, instructions inside the for block are executed unless j becomes greater than n.

so value of i (2,4,6,8,.....) (n odd numbers) in each iteration will be printed using system.out.println.