#include <stdio.h>
void main(){
  int i, n, sum=0;
  printf("Input the number of terms : ");
  scanf("%d",&n);
  printf("\nThe even numbers are: ");
  for(i=1;i<=n;i++)
    {
     printf("%d ",2*i);
     sum += 2*i;
    }

  printf("\nThe Sum of even natural numbers upto %d terms is : %d \n ",n,sum);
}

#include <iostream>
using namespace std;
int main()
{
      int i, n, sum=0;
      cout<<"Input the number of terms : ";
      cin>>n;
      cout<<"\nThe even numbers are: ";
      for(i=1;i<=n;i++)
        {
         cout<<2*i<<" ";
         sum += 2*i;
        }

      cout<<"\nThe Sum of even natural numbers upto "<<n<<" terms is: "<<sum;
}

sum=0
n = int(input("Input the number of terms: "))
print("\n The even numbers are: ")
for i in range(1, n+1):
    print(2*i)
    sum=sum+(2*i)
print("The Sum of even natural numbers upto ", n," is:", sum)

import java.util.*;
public class sum {
    public static void main(String[] args) {     
        int i, n, sum=0;

	System.out.println("Enter the number of terms :  ");
        Scanner s=new Scanner(System.in);
        n = s.nextInt();

        System.out.println("\nThe even numbers are: ");
	  for(i=1;i<=n;i++)
	    {
	     System.out.println(2*i);
	     sum += 2*i;
	    }
        System.out.println("\nThe Sum of even natural numbers upto " +n +" terms is :  \n "+sum);

      }
}