Program to Find if number is Armstrong Number or Not in C++ C

#include<bits/stdc++.h>
using namespace std;
bool isArm(int num)
{
int ans=0;
int p=num;
while(num>0)
{
int x=num%10;
ans+=x*x*x;
num/=10;
}
if(p==ans)
return 1;
return 0;
}
int main()
{
cout<<isArm(371);
}