Need help with bridgescoring program! Please Help!

[jladd5]

Okay, so I am having a few problems with my computer science lab. Below is what I have so far. I am almost positive that the equations are correct, but for some reason I keep getting a different answer than the cs labs example program. So obviously something is wrong. Could you please help me find the problem and solve it?

Here is the lab write-up for reference.
http://www.cs.utk.edu/~cs102/labs/labsholder/lab4.html

My imput for my program and the example program has been this.

N
2H
Y
10

Now the difference is that my output is this.

2 H by North, making 10 for 280 points

And the example programs output is this.

2 H by North, making 4 for 170 points

#include <iostream>
#include <string>

using namespace std;

bool isGame (int, string);

int main()
{
string trump;
int score, contract, numTricks;
char winner, vuln;
bool win = true;

cout << "Who won the bidding? " "(N/S/E/W): ";
cin >> winner;

if(winner!='N' && winner!='S' && winner!='E'&& winner !='W')
{
cout << "Directions must be N, S, E, or W.\n";
return 0;
}


cout << "What won the contract? " "(Such as 2 H or 3 NT): ";

cin >> contract;
cin >> trump;

if (trump!="NT" && trump!="S" && trump!="A" && trump!="D" && trump!="H"){

cout << "The contract's suit must be NT, S, H, D or A.\n";
return 0;
}

if(contract > 7||contract < 1){
cout << "Contract is wrong.\n";
return 0;
}

cout << "Was the partnership vulnerable? (Y/N): ";
cin >> vuln;

if(vuln != 'Y' && vuln != 'N'){
cout << "Vulnerability must be Y or N.";
return 0;
}

//check if we won enough tricks

cout << "How many tricks were taken? ";
cin >> numTricks;


if((contract+6) > numTricks)
{
win = false; // we lost so update our win boolean
if (vuln == 'Y')
{
score= -100*((contract+6)-numTricks);// do calculations for this case
}
else
{
score= -50*((contract+6)-numTricks);// do calcs for no case

}
}
else // we won calculate score for winning
{
if (vuln == 'N')
{
score= 20*(numTricks-6);
}

else (trump == "S" || trump == "H"|| trump == "A" || trump == "D");{//Won Enough)
score= 30*(numTricks-6);
}

if (trump=="NT");{
score=20*((numTricks-6)+(10));
}
}

cout << contract << " " << trump << " by";

if ( winner == 'N') {cout << " North, ";}
if ( winner == 'S') {cout << " South, ";}
if ( winner == 'W') {cout << " West, ";}
if ( winner == 'E') {cout << " East, ";}

if (win)
{
cout << "making";
}
else
{
cout << " down";
}

cout << " " << numTricks <<" for" << " " << score << " " << "points\n";

return 0;
}