C Program to Print First N Even Natural Numbers

In this tutorial, i am going to show you how to print first n (10, 100, 1000 .. N) even natural numbers in the c program using for loop and while loop

Algorithm and Program to Print First N Even Natural Numbers in C

  • Algorithm to Print First N Even Natural Numbers
  • C Program to Print First N Even Natural Numbers using For Loop
  • C Program to Print First N Even Natural Numbers using While Loop

Algorithm to Print First N Even Natural Numbers

Follow the below given algorithm to write a program to find and print first n(10, 100, 1000 .. N) even natural numbers:

  • Step 1: Start Program.
  • Step 2: Read the a number from user and store it in a variable.
  • Step 3: Find first n even natural number using for loop or while loop.
  • Step 4: Print first n even natural number.
  • Step 5: Stop Program.

C Program to Print First N Even Natural Numbers using For Loop

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

The result of the above c program; as follows:

Input number of terms : 5
The even numbers are :2 4 6 8 10

C Program to Print First N Even Natural Numbers using While Loop

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

The result of the above c program; as follows:

Input number of terms : 5
The even numbers are :2 4 6 8 10 

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