need help quickly, going insane with this

hey guys, heres my problem, ive been workin on a problem known as knapsack for my c++ course for 3 weeks now, heres the premise of it, you enter numbers individually, set a goal number, and the program works out which ones will give you that number, ive been doin this and i keep on getting errors or blue screens or w/e, please anyone who can help, provide me with the code if you have it or anythin thanks

post the code you have or the code you believe is causing the blue screen error - blue screens and errors like that could be caused by access violations. Check you initialize and use arrays correctly and dont overflow them. Come back with the code..

heres the code : please help as soon as you can i have to hand it in tommorow


#include <iostream.h>
#include <lvp\string.h>
#include <lvp\vector.h>

//typedef vector<int> KnapsackArr;
//------------------------------------------------------------------------------
void LoadData(int &goal, int n, vector <int> &OldArr)
{
//Pre: None
//Post:Enters data into array, enters number for search

// vector <int> KnapsackArr (n);
n=0;
cout<<"Enter value (0=done) : ";
cin>>OldArr[n];

while (OldArr[n]!=0)
{
n++;
cout<<"Enter value (0=done) : ";
cin>>OldArr[n];
}

cout<<"Enter goal (0=done) : ";
cin>>goal;

}
//------------------------------------------------------------------------------
void FindCombo(int index, int sum, int goal, vector <int> &NewArr, const vector<int> &OldArr)
{
//Pre:Array with values in array
//Post:Returns combinations for number

/* for (x=0;KnapsackArr.length()-1;x++)
for (y=0;KnapsackArr.length()-1;y++){
if (KnapsackArr[x]+KnapsackArr[y]==goal)
cout<<"Possible Solutions : "<<KnapsackArr[x]<<" "<<KnapsackArr[y];
else
break;
} */
int temp=0;
//sum=0;
while (index>0)
sum+=NewArr[index];

}
//---------------------------------------------------------------------------
void Reverse (vector <int> &NewArr, int &sum, int index, int goal)
{

while (index>0 && sum!=goal)
{
for (index=NewArr.length()-1; index>0; index--)
sum+=NewArr[index];
Reverse (NewArr, sum, index-1, goal);
}
cout<<"Sum : "<<sum<<" "<<"Index : "<<index<<endl;
}
//------------------------------------------------------------------------------
void DisplayResults(int &goal)
{
if (goal!=0)
cout<<"Possible Solutions : "<<goal;
else
cout<<"No Solution";
}
//------------------------------------------------------------------------------
void TryAgain(int sum, int goal, int index, vector <int> &NewArr)
{
for (index=NewArr.length()-1; ;index--)
{ sum=0;
sum+=NewArr[index];
if(sum==goal)
cout<<"Got It";
else
TryAgain(sum, goal, index, NewArr);
}
}
//---------------------------------------------
int main ()
{
int index,sum, n, goal;
vector <int> NewArr(15);
vector <int> OldArr(15);
LoadData(goal, n, OldArr);
NewArr=OldArr;
TryAgain(sum,goal, index, NewArr);


// FindCombo(index, sum, goal, NewArr, OldArr);
// Reverse (NewArr, sum, index, goal);

// DisplayResults(goal);

// cout<<goal<<" ";
// for (n=0; n<=KnapsackArr.length()-1; n++)
// cout<<KnapsackArr[n]<<" ";

return (0);
}