# C Program to Generate First N Armstrong Numbers Where N is Given by User

A number is said to be Armstrong or Narcissistic Number if it is equal to the sum of its own digits raised to the power of the number of digits in a given number.

For example number 153 is Armstrong number because: 13 + 53 + 33 = 153

Similary, 1634 is also Armstrong number i.e. 14+64+34+44 = 1634

Single digits number 1 to 9 are also Armstrong numbers.

In this C program, we are going to generate first N Armstrong Numbers where value of N is given by user.

## Program

``````
#include<stdio.h>
#include<conio.h>
#include<math.h>

int main()
{
int n, digitCount, number, sum, rem, i=2, count=1;
clrscr();
printf("Enter how many Armstrong numbers? \n");
scanf("%d", &n);

/* Generating Armstrong Numbers */
while(count <= n)
{

/* Finding number of digits */
number = i;
digitCount = 0;
while(number != 0)
{
digitCount++;
number = number/10;
}

/* Finding sum */
number = i;
sum = 0;
while(number != 0)
{
rem = number%10;
sum = sum + pow(rem, digitCount);
number = number/10;
}

/* Making Decision and Printing */
if(sum == i)
{
printf("%d\t", i);
count++;
}
i++;
}
getch();
return(0);
}
``````

Output of the above program :

```Run 1:
----------
Enter how many Armstrong numbers?
5 ↲
1   2   3   4   5

Run 2:
----------
Enter how many Armstrong numbers?
15 ↲
1     2     3    4      5     6     7     8     9     153
370   371   407  1634   8208

Note: ↲ indicates enter is pressed.
```