# Java Program to print Sum of N Even numbers

Get input n and print n even numbers.

Sample Input 1:

7

Sample Output 1:

The sum of N Even numbers:56

#### Program or Solution

``` import java.util.*; class SumOfNEven { public static void main(String args[]) { int i,j,N,sum=0; System.out.println("Enter The Value Of N"); Scanner sc=new Scanner(System.in); N=sc.nextInt(); for(j=1,i=2;j<=N;i=i+2,j++) { sum=sum+i; } System.out.println("The Sum Of N Even Numbers: "+sum); } } ```

#### Program Explanation

1.    Get input N (How many even numbers to be summed)

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

for(j=1,i=2;j<=N;i=i+2,j++)

3.    Here i is initialized to 2 and j is initialized to 1 and i is incremented by 2 and  j is incremented by 1 for each           iteration.

instructions inside the for block are executed in every iteration and iteration stops when j becomes                       greater than N. so value of i (2,4,6... ) will be added to sum.

so even numbers (i) are added to the sum for j --> 1 to N times

sum = sum + j

sum = 0 + 2

sum = 2 + 4

sum = 6 + 6

sum = 12 + 8

..................

..................

after adding all N even numbers to sum, sum will be printed using system.out.println().

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