C program to generate and print armstrong numbers

C programming code

#include <stdio.h>

int main()

{

   int r;

   long number = 0, c, sum = 0, temp;

   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;

   }

   return 0;

}

Output of program:

Enter an integer upto which you want to find armstrong numbers

1000

Following armstrong numbers are found from 1 to 1000

1

153

370

371

407

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