C++ int type value Compare with constant value

#include <iostream>
using namespace std;
int main()//from  w w  w . java 2  s  .c  o m
{
   const double LIMIT = 3000.0;
   int id;
   double miles;
   cout << "Please type in car number and mileage: ";
   cin  >> id >> miles;
   if (miles > LIMIT)
      cout << " Car " << id << " is over the limit.\n";
   cout << "End of program output.\n";
   return 0;
}