URGENT-"Undefined Reference to 'Stack::Pop()'" when compiling

rguid17 (6)
I finally figured out the code and everything for a mouse maze but when I go to compile my seperated program4.cc file and my Maze.cc file together, it returns with this:

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program4.o: In function `WalkThroughMaze(Maze&, int, int)':
program4.cc:(.text+0xbf): undefined reference to `Stack::Push(DATA)'
program4.cc:(.text+0xe2): undefined reference to `Stack::StackTop(DATA&)'
program4.cc:(.text+0xfb): undefined reference to `Stack::Pop(DATA&)'
program4.cc:(.text+0x108): undefined reference to `Stack::Pop(DATA&)'
program4.cc:(.text+0x114): undefined reference to `Stack::Push(DATA)'
program4.cc:(.text+0x198): undefined reference to `Stack::Push(DATA)'
program4.cc:(.text+0x1df): undefined reference to `Stack::Push(DATA)'
program4.cc:(.text+0x1ec): undefined reference to `Stack::Pop(DATA&)'
program4.cc:(.text+0x249): undefined reference to `Stack::Push(DATA)'
program4.cc:(.text+0x264): undefined reference to `Stack::Pop(DATA&)'
program4.cc:(.text+0x2ae): undefined reference to `Stack::IsEmpty()'
program4.cc:(.text+0x2e0): undefined reference to `Stack::IsEmpty()'
program4.cc:(.text+0x340): undefined reference to `Stack::~Stack()'
program4.cc:(.text+0x367): undefined reference to `Stack::~Stack()'
program4.cc:(.text+0x383): undefined reference to `Stack::~Stack()'
program4.cc:(.text+0x3b4): undefined reference to `Stack::~Stack()'
program4.o: In function `main':
program4.cc:(.text+0x505): undefined reference to `Maze::Maze()'
collect2: ld returned 1 exit status


Here is my program4.cc file:

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#include <cstdlib>
#include <iomanip>
#include <string>
#include <iostream>
#include <fstream>
#include "Boolean.h"
#include "Stack.h"
#include "Maze.h"

using namespace std;

void Menu(Maze&);
void WalkThroughMaze(Maze&, int, int);
bool CheckExit(int, int);

int main(){
   Maze maze;
   maze.FillMatrix();
   Menu(maze);
   return 0;
}

void Menu(Maze &maze){
   int start, exit, option;
   bool cont = true;
   while(cont){
      cout<<"Welcome to Mouse in a Maze: \n"<<endl;
      cout<<"Please select an option: \n";
      cout<<"1) Begin Mouse in Maze game. \n";
      cout<<"2) Exit program. \n";
      cin>>option;
      if (option = 1){
         cout<<"Please enter desired starting point for the mouse -> \n";
         cin>>start;
         cout<<"Now enter desired exit point for the maze -> \n";
         cin>>exit;
         cout<<endl;
         cout<<"Mouse going through maze: \n";
         WalkThroughMaze(maze, start, exit);
         cont = true;
      }
      else if (option = 0)
         cont = false;
      else{
         cout<<"Incorrect input for option -- Try again \n";
         cont = true;
      }
   }
}


void WalkThroughMaze (Maze &maze, int start, int exit){
   Stack visitStack, backStack;
   DATA mouse, next, decision;
   bool exitFlag;
   decision.row = -1; //Set the decision marker
   mouse.row = start;
   int k, j, i; //Counters used in walkthrough
   visitStack.Push(mouse);
   //Check to see if start position is the exit
   exitFlag = CheckExit(mouse.row, exit);
   while(!exitFlag AND !visitStack.IsEmpty()){
      visitStack.StackTop(mouse); //Get top of the list value
      if(mouse.row EQ -1){
         //If the top of the visitStack is the decision
         //marker, delete decision marker and go to that
         //position received from backStack
         visitStack.Pop(mouse);
         backStack.Pop(mouse);
         visitStack.Push(mouse);
         maze.MarkVisited(mouse.row);
         cout<<"*"<<mouse.row<<endl;
         if(CheckExit(mouse.row, exit))
            exitFlag = true;
      }
      else{
         //Set counters to 0
         k = 0;
         j = 0;
         while(maze.Neighbor(mouse.row, j)){
            //Count the number of neighbors and
            //push neighbors to backStack
            next.row = j;
            backStack.Push(next);
            k++;
            j++;
         }
         if(k = 1){
            //If there is only one neighbor, move mouse
            //to next position
            mouse = next;
            visitStack.Push(mouse);
            backStack.Pop(mouse);
            maze.MarkVisited(mouse.row);
            cout<<mouse.row<<endl;
            if(CheckExit(mouse.row, exit))
               exitFlag = true;
         }
         else if (k GT 1){
            //If there is more than one neighbor, push -1
            //to visitStack
            i = 0;
            while(i LT k){
               visitStack.Push(decision);
               i++;
            }
         }
         else{
            //Position is not exit nor does it have neighbors
            visitStack.Pop(mouse);
            cout<<"*"<<mouse.row<<endl;
         }
      }
   }
   if(visitStack.IsEmpty()){
      //Stack is empty and no exit was found
      cout<<"No exit found, reward mouse with cheese anyway\n";
   }
   else{
      //Exit has been found
      cout<<"Mouse has found exit at position("<<mouse.row<<").\n";
      cout<<"Reward mouse with cheese!\n";
   }
}

bool CheckExit(int position, int exit){
   bool success;
   if (position EQ exit){
      success = true;
   }
   else{
      success = false;
   }
   return success;
}


And here is my Maze.cc file:

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#include "Maze.h"
#include "Boolean.h"
#include <cstdlib>
#include <iomanip>
#include <string>
#include <iostream>
#include <fstream>

using namespace std;

Maze::~Maze(){
   delete []maze;
   delete []visitArray;
}

void Maze::FillMatrix(){
   int i = 0; //Counter for rows
   int j = 0; //Counter for columns
   ifstream infile;
   infile.open("Matrix.data"); //Opens Matrix.data
   if (infile.fail()){
      cout<<"Could not read file. \n";
      exit (1);
   }
   infile>>maze[i][0];
   while(!infile.eof()){
      for (i = 0; i LT size; i++){
         for (j = 1; j LT size; j++)
            infile>>maze[i][j];
         infile>>maze[i+1][0];
      }
   }
   infile.close(); //Close file
}

bool Maze::CheckVisited(const int &i){
   bool success;
   if (visitArray[i] != 0)
      success = true;
   else
      success = false;
   return success;
}

bool Maze::MarkVisited(const int &i){
   bool success;
   if (CheckVisited(i)){
      //print error
      success = false;
   }
   else{
      visitArray[i] = 1;
      success = true;
   }
   return success;
}

bool Maze::Neighbor(const int &i, int &j){
   bool success = false;
   while(j LT size AND !success){
      if(maze[i][j] = 1 AND !CheckVisited(j))
         success = true;
      else{
         success = false;
         j++;
      }
   }
   return success;
}


Any help? I can't figure out my compiling problem and this code is due tomorrow. Also, my code is probably not completely correct for output but I will work out the dinks later when I am able to compile it.
LB (13399)
Did you actually define and compile the functions to your stack class? (and your maze class' constructor?)
Last edited on
rguid17 (6)
I forogot that I had the third .cc file to compile for my Stack methods. Being rushed for the deadline and I completely forgot about including them in with my compile. Thanks for reminding me!
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