Iterator of map STL C++ it doens't work? -

i have strange problem. declareded iterator of map::iterator doesn't work. problem?

 string name "john";     int count = 200;     map<string,int> store;     map<string,int>::iterator it;  = store.find( name );              if ( != store.end() )             {                 it->second += count;             } else             {                 store.insert( make_pair (name, count) );             } 

the code wrote should work on updated c++ compiler.

i think forget include <map> code. see live code:

#include <iostream> #include <string> #include <map>  using namespace std;  int main() {     string name = "john";     int count = 200;     map<string, int> store;     map<string, int>::iterator it;      = store.find(name);      if (it != store.end())     {         it->second += count;     }     else     {         store.insert(make_pair(name, count));         cout << "adding new value" << endl;     } } 

output

adding new value 

the method std::map::find returns iterator , code caught fine , use it.