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Unresolved External Symbol Error

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Join Date: Oct 2006

Location: Manchester, UK

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delphi_uk

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Unresolved External Symbol Error

Mar 15th, 2007

Hello to you all,

I am having problems with some code that I am working on for a text parsing system from an external *.txt file. The problem seems to stem from the Tokenize function, as I get a:

"LNK2019 error: unresolved external symbol "void __cdecl Tokenize(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::vector<class std::basic_string<char,struct std::char_traits<char>, class std::allocator<char> >, class std::allocator<class std::basic_string<char, struct std::char_traits<char>,class std::allocator<char> > > > &)"

 Help with Code Tags 
 cplusplus Syntax (Toggle Plain Text) 
// stringtest.cpp
 
#include <string>
#include <algorithm>
#include <vector>
#include <iostream>
#include <fstream>
 
using namespace std;
 
void Tokenize(const string& str, vector<string>& tokens);
 
int main()
{
    vector<string> tokens;
 
    char _string[256];
    char inputChar[256];
    string inputString;
    ifstream input;
 
    cout << "Enter name of an existing file: ";
    cin.get( _string, 256 );
 
    input.open( _string );
 
    input.getline( inputChar, 256 );
    cout << inputChar << endl;
    inputString = inputChar;
    cout << inputString << endl << endl;
 
    Tokenize( inputString, token );
    copy( tokens.begin(), tokens.end(), ostream_iterator<string>(cout, ", "));
 
     return 0;
}
 
void Tokenize( const string& str, vector<string>& tokens, const string& delimiters = "|")
{
     // Tokenize taken from [url]http://www.hispafuentes.com/[/url]
     // Skip delimiters at the beginning
     string::size_type lastPos = str.find_first_not_of( delimeters, 0 );
     // Find first "non-delimiter".
     string::size_type pos = str.find_first_of( delimiters, lastPos );
 
     while (string::npos != pos || string::npos != lastPos)
     {
           // Found a token add it to the vector
           tokens.push_back( str.substr(lastPos, pos - lastPos));
           // Skip delimiters. Note the "not_of"
           lastPos = str.find_first_not_of( delimiters, pos);
           // Find next "non-delimiter"
           pos = str.find_first_of( delimiters, lastPos );
      }
}
// stringtest.cpp
 
#include <string>
#include <algorithm>
#include <vector>
#include <iostream>
#include <fstream>
 
using namespace std;
 
void Tokenize(const string& str, vector<string>& tokens);
 
int main()
{
    vector<string> tokens;
 
    char _string[256];
    char inputChar[256];
    string inputString;
    ifstream input;
 
    cout << "Enter name of an existing file: ";
    cin.get( _string, 256 );
 
    input.open( _string );
 
    input.getline( inputChar, 256 );
    cout << inputChar << endl;
    inputString = inputChar;
    cout << inputString << endl << endl;
 
    Tokenize( inputString, token );
    copy( tokens.begin(), tokens.end(), ostream_iterator<string>(cout, ", "));
 
     return 0;
}
 
void Tokenize( const string& str, vector<string>& tokens, const string& delimiters = "|")
{
     // Tokenize taken from [url]http://www.hispafuentes.com/[/url]
     // Skip delimiters at the beginning
     string::size_type lastPos = str.find_first_not_of( delimeters, 0 );
     // Find first "non-delimiter".
     string::size_type pos = str.find_first_of( delimiters, lastPos );
 
     while (string::npos != pos || string::npos != lastPos)
     {
           // Found a token add it to the vector
           tokens.push_back( str.substr(lastPos, pos - lastPos));
           // Skip delimiters. Note the "not_of"
           lastPos = str.find_first_not_of( delimiters, pos);
           // Find next "non-delimiter"
           pos = str.find_first_of( delimiters, lastPos );
      }
}