ShreeSanaviAcademy.

#include<stdio.h>
#include<conio.h>
int main()  
{  
    int num, count = 100, rem, sum;  
      while(count <= 500)  
    {  
        num = count;  
        sum = 0;  
  
        while(num>0)  
        {  
            rem = num % 10;  
            sum = sum + (rem * rem * rem);  
            num = num / 10;  
        }  
          if(count == sum)  
        {  
            printf("%d is an Armstrong number\n", count);  
        }  
          count++;  
    }  
    getch ();
       return 0;  
}

153 is an Armstrong number
370 is an Armstrong number
371 is an Armstrong number
407 is an Armstrong number

--------------------------------
Process exited after 5.23 seconds with return value 0
Press any key to continue . . .