c++ - Map iterator issues. Code included -

so here s code, dont understand why i'm getting these errors. issue within export recipes function.

#include<iostream> #include<fstream> #include<map> #include<vector> #include<string>   using namespace std;  void displaymenu(); void addrecipe( map< string, vector<string> >& recipes ); void exportrecipes( map< string, vector<string> >& recipes );  int main ( void ){     int choice = 0;    bool done = false;    map< string, vector<string> > recipes;      while ( done == false ){        displaymenu();        cin >> choice;         if ( choice == 3 ){         done = true;        }        else if ( choice == 2 ){         exportrecipes( recipes );        }        else if ( choice == 1 ){         addrecipe( recipes );        }      } }  void displaymenu(){     cout << "1. add recipe " << endl;    cout << "2. export recipes " << endl;    cout << "3. exit" << endl; }  void addrecipe( map< string, vector<string> >& recipes ){     string name, ingredient;    bool done = false;    cout << "enter recipe name: ";    cin >> name;    while ( done == false ){             cout  << "enter new ingredient , amount( enter done exit )" << endl;        getline( cin , ingredient, '\n' );         if ( ingredient == "done" ){            done = true;        }         if( ingredient != "done"){            recipes[ name ].push_back( ingredient );            cout << "added \"" << ingredient << "\"." << endl << endl;        }            } }   void exportrecipes(  map< string, vector<string> >&recipes ){     ofstream outfile;    outfile.open( "recipes.txt" );     ( map< string, vector<string> >::iterator recipe =        recipes.begin(); recipe != recipes.end(); recipe++ ) {        outfile << endl << endl << recipe -> first << endl;         ( map< string, vector<string> >::iterator ingredients =             recipe->second.begin(); ingredients != recipe->second.end();             ingredients++ ) {                outfile << "\t" << *ingredients << endl;        }    } } 

if iterate through first loop in export can key, cant value @ all.

why have second loop map. recipe->second vector try -

void exportrecipes(  map< string, vector<string> >&recipes ){    ofstream outfile;    outfile.open( "recipes.txt" );     ( map< string, vector<string> >::iterator recipe =        recipes.begin();         recipe != recipes.end();         recipe++ )    {       outfile << endl << endl << recipe -> first << endl;        ( vector<string>::iterator ingredients =          recipe->second.begin();             ingredients != recipe->second.end();             ingredients++ )         {             outfile << "\t" << *ingredients << endl;         }     }  }