C++ program to print armstrong numbers between 1 to 1000

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What is armstrog number?
An armstrong number is that number whose digits when raised to power 3 and added produce the number itself for example:

153 = 1³ + 5³ + 3³

The following program prints armstrong numbers between 1 to 1000.

^{#include<iostream.h>}

^{#include<conio.h>}

^{void arm(int);}

^{void main()}

^{

                ^{for(int i=1;i<=1000;++i)}

                ^{

                 ^arm(i);

                ^}

^}

^{void arm(int a)}

^{

^{int b,rem,sum=0;}

^b=a;

     ^while(a>0)

     ^{

      ^rem=a%10;

      ^{sum=sum+(rem * rem * rem);}

      ^a=a/10;

     ^}

^if(sum==b)

^{cout<<"Armstrong Num "<<b<<"\n";}

^}