Display Armstrong Numbers between 1 and 1000

An integer number is known as Armstrong number if the sum of cubes of its individual digits is equal to the number itself. Here we will write a program to display armstrong numbers upto 1000.

Example: Prints Armstrong numbers upto 1000

#include <cmath>  
using namespace std;  
int main(){
     int sum, num;
     cout<<"Armstrong numbers between 1 and 1000: ";
     for(int i = 0; i < 10; i++) {
        for(int j = 0; j < 10; j++) {
           for(int k = 0; k < 10; k++) {
              num = i * 100 + j * 10 + k;
              sum = pow(i, 3) + pow(j, 3) + pow(k, 3);
              if(num == sum)
                 cout<<num<<"  ";
           }
        }
     }
     return 0;
  }