C program to generate and print armstrong numbers

This program prints armstrong number. In our program we ask the user to enter a number and then we use a loop from one to the entered number and check if it is an armstrong number and if it is then the number is printed on the screen. Remember a number is armstrong if the sum of cubes of individual digits of a number is equal to the number itself. For example 371 is an armstrong number as 33 + 73 + 13 = 371. Some other armstrong numbers are 0, 1, 153, 370, 407.

C programming code

#include <stdio.h>

#include<conio.h> 

void main()

{

   int r;

   long number = 0, c, sum = 0, temp;

   clrscr();   

   printf("Enter an integer upto which you want to find armstrong numbers\n");

   scanf("%ld",&number);

   printf("Following armstrong numbers are found from 1 to %ld\n",number);

   for( c = 1 ; c <= number ; c++ )

   {

      temp = c;

      while( temp != 0 )

      {

         r = temp%10;

         sum = sum + r*r*r;

         temp = temp/10;

      }

      if ( c == sum )

         printf("%ld\n", c);

         sum = 0;

    }

  getch();;

}

Output of the program...