C++ Fehler: Wurde nicht deklariert in den Anwendungsbereich

Hey Leute, ich bin an einem Projekt arbeiten und ich machte mich ziemlich gut, bis ich traf diese Wand..

Bin ich immer zwei Fehler:

Fehler: 'binarysearch-Methode' wurde nicht deklariert, in diesem Umfang

Fehler: 'addInOrder' wurde nicht deklariert, in diesem Umfang

Hier sind meine Dateien, die ich ausprobiert habe schon ein paar Sachen ohne Erfolg. Hilfe wäre sehr geschätzt werden.

histogram.cpp

#include "histogram.h"
#include "countedLocs.h"

//#include "vectorUtils.h"
#include <string>
#include <vector>

using namespace std;
void histogram (istream& input, ostream& output)
{
  //Step 1 - set up the data
  vector<CountedLocations> countedLocs;

  //Step 2 - read and count the requested locators
  string logEntry;
  getline (input, logEntry);
  while (input)
    {
      string request = extractTheRequest(logEntry);
      if (isAGet(request))
    {
      string locator = extractLocator(request);

      int position = binarySearch (countedLocs,
                       CountedLocations(locator, 0));
      /** Hint - when looking CountedLocations up in any kind
          of container, we really don't care if the counts match up
          or not, just so long as the URLs are the same. ***/

      if (position >= 0)
        {
          //We found this locator already in the array.
          //Increment its count
          ++countedLocs[position].count;
        }
      else
        {
          //This is a new locator. Add it.
          CountedLocations newLocation (locator, 1);
          addInOrder (countedLocs, newLocation);
        }
    }
      getline (input, logEntry);
    }

  //Step 3 - write the output report
  for (int i = 0; i < countedLocs.size(); ++i)
    output << countedLocs[i] << endl;
}

countedLocs.cpp

#include "countedLocs.h"
#include <iostream>
#include <vector>

using namespace std;


int CountedLocations::binarySearch(const vector<CountedLocations> list, CountedLocations searchItem)
{
   //Code was here
}

int CountedLocations::addInOrder (std::vector<CountedLocations>& vectr, CountedLocations value)
{
   //Code was here
}

countedLocs.h

#ifndef COUNTEDLOCATIONS
#define COUNTEDLOCATIONS

#include <iostream>
#include <string>
#include <vector>


struct CountedLocations
{

    std::string url;
    int count;

    CountedLocations (){
     url = "";
     count = 0;
    }

    CountedLocations(std::string a, int b){
     url = a;
     count = b;
    }

    int addInOrder (std::vector<CountedLocations>& vectr, CountedLocations value);
    int binarySearch (const std::vector<CountedLocations> list, CountedLocations searchItem);
};

inline
std::ostream& operator<< (std::ostream &out, CountedLocations& cL)
{
    //out << "URL: " << cL.url << " count: " << cL.count << std::endl;

    out << "\"" << cL.url << "\"," << cL.count;
    return out;
}

#endif