c++ - Link List - no operator '<<' matches -


my c++ poor. anyhow code snippet bellow why error on << in while loop when outside of no error. error is: no operator "<<" matches these operands. string w picks word fine. read somewhere may have overload why? , how on load link list. in advance.

void print() {  hashtable *marker = headone;  hashtable *inlist;  for( int = 0; < tablesize; i++ )  {     cout << << ": " << marker->number << endl;     if(marker->child != null)     {         inlist = marker;                 {             string w = inlist->word;              cout << w << endl;             inlist = inlist->child;         }         while(inlist != null);       }     marker = marker->next;  }//end loop }

in order able cout std::string have include:

#include <string> #include <iostream>

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