include <hashmap.h>
  include <iostream>
  using namespace std;
  
  int main(int argc, char** argv)
  {
    hashmap<int, int> myHash;
    myHash.insert(make_pair(4, 40));
    myHash.insert(make_pair(6, 60));
  
    hashmap<int, int>::value_type* x = myHash.find(4);
    if (x != NULL) {
      cout << "4 maps to " << x->second << endl;
    } else {
      cout << "cannot find 4 in map\n";
    }
  
    myHash.erase(4);
  
    hashmap<int, int>::value_type* x2 = myHash.find(4);
    if (x2 != NULL) { 
      cout << "4 maps to " << x2->second << endl;
    } else {
      cout << "cannot find 4 in map\n";
    }
  
    myHash[4] = 35;
    myHash[4] = 60;
  
    hashmap<int, int>::value_type* x3 = myHash.find(4);
    if (x3 != NULL) { 
      cout << "4 maps to " << x3->second << endl;
    } else {
      cout << "cannot find 4 in map\n";
    }
  
    return (0);
  }