Thread: Unresolved external error

Hi all,

I'm trying to complete a C++ assign. Im in a mad rush as I have to hand in the assign. tommorrow . On compiling I am getting an unresolved external error in relation to a user library that I am trying to use. Code as follows:


Assig1:

Code:

Marks[MAX_NO_MARKS];
int HiMark, LoMark, TotalNoMarks;

if(MarksFile)
{
TotalNoMarks = ReadMarks (MarksFile, Marks);
SortArray (TotalNoMarks, Marks);
FindHiLo (Marks, TotalNoMarks, HiMark, LoMark);
DisplayMarks (Marks, TotalNoMarks, HiMark, LoMark);
MarksFile.close();
}

else
{
cout<<"File does not exist";
getch();
}

}
//*****************************************************************
int ReadMarks (ifstream &MarksFile, int Marks[])
{
int Count = 0;

while (!MarksFile.eof() && Count < MAX_NO_MARKS)
{
MarksFile>>Marks[Count];
Count++;
}

return Count;
}
//*****************************************************************
void FindHiLo (int Marks[], int TotalNoMarks, int &HiMark, int &LoMark)
{
int Count = 0;

HiMark = 0;
LoMark = 0;

for (Count = 0; Count < TotalNoMarks; Count++)
{
if (Marks[Count] >= IGNORE_LO && Marks[Count] <= IGNORE_HI)
{
if (Marks[Count] < LoMark)
{
LoMark = Marks[Count];
}

if (Marks[Count] > HiMark)
{
HiMark = Marks[Count];
}

Count++;
}


}

}
//*****************************************************************
void DisplayMarks (int Marks[], int TotalNoMarks, int HiMark, int LoMark)
{
int Count, tempCount, tempMark, tabstop;

tabstop = 10;

clrscr();

cout<<"Highest"<<setw(tabstop)<<HiMark<<endl;
cout<<"Lowest"<<setw(tabstop)<<LoMark<<endl<<endl;

cout<<endl;

tempMark=Marks[0];

cout<<tempMark<<setw(10)<<"*";

for (Count = 1; Count < TotalNoMarks; Count++)
{
tempMark = Marks[Count];

if (tempMark == Marks[Count-1])
{
cout<<"*";
}
else
cout<<endl<<tempMark<<setw(tabstop)<<"*";

}

cout<<"\n\n\n";
getch();
}

Code:

intsort.h:
void SortArray ( int NumberElements, int Array[] );

intsort.cpp:

Code:

void SortArray ( int NumberElements, int Array[] )
{
int outer, inner;
int tempint;

for ( outer = NumberElements - 1; outer>0; outer-- )
{
for ( inner = 0; inner < outer; inner++ )
{
if (Array[inner] > Array[inner+1] )
{
tempint = Array[inner];
Array[inner] = Array[inner+1];
Array[inner+1] = tempint;
}
}
}
}

Again thanx very much for your help

Kirk

Sorry - I'm new to C++. Im using Bcc32 (the free Borland compiler) under windows XP SP2. The library is intsort.h (user library) which I have placed in the same directory as the .cpp files included in my first post. The exact error reads:

Code:

Error: Unresolved external 'SortArray(int, int *)' referenced from C:\C++ CODE\ASSIG1.OBJ
>Exit code: 1

Yeah sorry I didn't notice that I cut off the top it reads:

Code:

//****************************************************************
//Libraries

#include <fstream.h>
#include <conio.h>
#include <iomanip.h>
#include "intsort.h"

//****************************************************************
//Prototypes

int ReadMarks (ifstream &MarksFile, int Marks[]);
void FindHiLo (int Marks[], int TotalNoMarks, int &HiMark, int &LoMark);
void DisplayMarks (int Marks[], int TotalNoMarks, int HiMark, int LoMark);

void SortArray ( int NumberElements, int Array[] );      //Remove once linking issue resolved

//****************************************************************
//Constants

const int MAX_NO_MARKS = 50;
const int IGNORE_HI = 100;
const int IGNORE_LO = 0;
//****************************************************************
void main()
{
    ifstream MarksFile ("highmark.dat");
    int Marks[MAX_NO_MARKS];
    int HiMark, LoMark, TotalNoMarks;
    
    if(MarksFile)
    {
        TotalNoMarks = ReadMarks (MarksFile, Marks);
        SortArray (TotalNoMarks, Marks);
        FindHiLo (Marks, TotalNoMarks, HiMark, LoMark);
        DisplayMarks (Marks, TotalNoMarks, HiMark, LoMark);
        MarksFile.close();        
    }
    
    else
    {
        cout<<"File does not exist";
        getch();        
    }
    
}