ok, here is my other program that I am having trouble with. It will look familiar. I have 2 linking errors that I cannot figure out. I hope you can help.

Code:

#include <iostream>
#include<ctime>
using namespace std;
void drawboard(int size, int sol);
void AddQueen(int size, int row, int boards, int sol);
int size;
int col[]; // column with the queen
bool colfree[16]; // is the column free?
bool upfree[16]; //is the upward diagonal free?
bool downfree[16]; //is the downward diagonal free?
int main() //starts main
{
int row = -1; //row whose queen is currently placed
int boards = 0; //number of positions investigated
int sol = 0; //number of solutions found
cout<<"What size board do you want?";
cin>>size;
int i;
for (i = 0; i < size; i++) colfree[i] = true;
for (i = 0; i < size; i++) {
upfree[i] = true;
downfree[i] = true;
}
AddQueen(size, row, boards, sol);
//add function to print board and count # of times ran
return 0;
}
//AddQueen: attempt to place a queen
void AddQueen(int size, int row, int boards, int sol)
{ //AddQueen
int c; //column being tried for the queen
float randnum; //random number for placing if queen
randnum=rand()%11;
boards++;
row++;
for (c = 0; c < 8; c++)
if (colfree[c] && upfree[row+c] && downfree[row-c+7]) {
col[row] = c; //put a queen in (row,c)
colfree[c] = false;
upfree[row+c] = false;
downfree[row-c+7] = false;
if (row == 7) //end condition
drawboard(size, sol);
else
AddQueen(size, row, sol, boards);
colfree[c] = true; //now backtrack by removing the queen
upfree[row+c] = true;
downfree[row-c+7] = true;
}
row--;
}
//drawboard: print a solution
void drawboard(int size, int sol)
{
int i, j;
sol++;
cout << "board ran" << sol << " times" <<endl;
cout << "-----------------" << endl;
for (i = 0; i < 8; i++) {//for
for (j = 0; j < col[i]; j++)
cout << " -";
cout << " Q";
for (j++; j < 8; j++)
cout << " -";
cout << endl;
}
cout << "-----------------" << endl;
}