Need Help -- String Reference

[ace duece]

Hi. I'm supposed to be creating a very simplistic auction sequence where only one bid per person is allowed for two bidders.

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;


int num;
//functions implemented for you

//Requires: nothing
//Modifies: nothing
//Effects:  prints out the initial header
void printHeader();

//Requires: num is 1-4 inclusive
//Modifies: nothing
//Effects: prints the appropriate error message
//         groups printing of error messages together into a function
void printErrorMessage(int num);


//Needs to be implemented

//Requires: prompt is non-empty
//Modifies: nothing
//Effects: prints the 'prompt' ; 
//         reads the price; 
//         dumps all data that remains on the line
//         returns the price
double getPrice(double reservePrice);

double getPrice()
{
	double reservePrice;
	cout << "Reserve price: $ ";
	cin >> reservePrice;
	string a;
	getline(cin,a);
	return reservePrice;
}


//Requires:  bidPrice and reservePrice to be loaded
//           reservePrice > 0
//Modifies:  nothing
//Effects: returns true if the bidPrice is >=reservePrice
//           false otherwise
//		   Also, prints errorMessage 2 if bidPrice < 0
//		         prints errorMessage 1 if bidPrice < reservePrice
bool isBidPriceGood(double bidPrice, double reservePrice);

bool isBidPriceGood(double bidPrice,double reservePrice)
{

	if (reservePrice > 0)
	{

	if (bidPrice >= reservePrice)
	{
		return true; 
	}
	else if (bidPrice < 0)
	{
		printErrorMessage(2);
		return 0;
	}
	else if (bidPrice < reservePrice)
	{
		printErrorMessage(1);
		return 0;
	}
	else 
	{
		printErrorMessage(5);
		return 0;
	}
	}
	return 0;
}
//Requires: prompt is non-empty
//Modifies: nothing
//Effects: prints the 'prompt'
//         reads the name of the bidder and returns this name
string getName(string bidder1);
string getName2(string bidder2);
string getLot(string lotName); 

string getLot()
{
	string lotName;
	cout << "Enter lot name: ";
	getline(cin,lotName);
	return lotName;
}

string getName()
{
	string bidder1;
	cout << "Bidder1 ID: ";
	getline(cin,bidder1);
	return bidder1;
}

string getName2()
{
	string bidder2;
	cout << "Bidder2 ID: ";
	getline(cin,bidder2);
	return bidder2;

}

double getBid1(double bid1);

double getBid1()
{
	double bid1;
	cout << "Bidder1 price: $ ";
	cin >> bid1; 

	if (bid1 <= 0)
	{
		int num = 2;
	}


	string f;
	getline(cin,f);

	return bid1;

} 

double getBid2(double bid2);

double getBid2()
{
	double bid2;
	cout << "Bidder2 price: $ ";
	cin >> bid2; 

	string u;
	getline(cin,u);
	
	return bid2; 
}
//Requires: bidder is non-empty, lotName is non-empty, bid is valid
//Modifies: nothing
//Effects: prints out "Congratulations", the winning bidder,
//         "You won", the name of the lot along with the price
//Example:
//Congratulations, Hobbes002
//You won "1987 Sugar Bombs" at a price of $2.25
void printWinner(string bidder, string lotName, double bid);

void printWinner(string bidder, string lotName, double bid)
{
	cout << "Congratulations, " << bidder << endl;
	cout << "You won " << "\"" <<   lotName << "\"" << " at a price of $" << bid;
}

//Requires: all parameters to be loaded
//          reservePrice > 0
//Modifies: nothing
//Effects:  will calculate the winner of the auction and print out the winner          
//Note:     you have a function that does the printing
//          also, prints error message in case no-one won
void calcWinner(string bidder1, string bidder2, string lotName, 
	            double bid1, double bid2, double reservePrice);
void calcWinner(string bidder1, string bidder2, string lotName, double bid1, double bid2, double reservePrice)
{

	double winningbid;

	if (bid1 && bid2 >= reservePrice)
	{
		if (bid1 > bid2)
		{
			winningbid = bid2 + 0.5;
			printWinner(bidder1, lotName, winningbid);
		}
		else if ((bid2 >= bid1) && (bid2 < bid1 + 0.5))
		{
			winningbid = bid1;
			printWinner(bidder1, lotName, winningbid);
		}
		else if (bid2 >= bid1 + .5)
		{
			winningbid = bid1 + 0.5; 
			printWinner(bidder2, lotName, winningbid);
		}


	}
	else if (bid2 >= reservePrice)
	{
		winningbid = bid2; 
		printWinner(bidder2, lotName, winningbid);
	}
	else if ((bid2 < reservePrice) && (bid1 >= reservePrice))
	{
		winningbid = reservePrice;
		printWinner(bidder1, lotName, winningbid);
	}
	else if (bid1 && bid2 < reservePrice)
	{
		printErrorMessage(4);
	}

}



void printHeader()
{
	cout << "----------------------------------------" << endl 
         <<"            bCreek" << endl 
         <<"       Fine Cereal Sales" << endl 
         <<"----------------------------------------" << endl << endl;
	cout << fixed << showpoint;
	cout << setprecision(2);
}





int main(double bid1, double bid2, double reservePrice, string bidder1, string bidder2)
{
	double a,b,c;
	string g,h,i;
	printHeader();
	i = getLot();
	cout << endl;
	a = getPrice();
	if (a < 0)
	{
		printErrorMessage(5);
		return 0;
	}
	cout << endl;
	h = getName();
	if (h == "")
	{
		printErrorMessage(3);
		cout << endl;
		g == getName2();
		cout << endl;
		c = getBid2();
		isBidPriceGood(c,a);
		calcWinner(h, g, i, 0, c, a);
		return 0;
	}
	cout << endl;
	b = getBid1();
	isBidPriceGood(b,a);
	if (b >= a) 
	{
		cout << h << " is high bidder, current price = $" << a; 
	}
	cout << endl;
	g = getName2();
	if (g == "")
	{
		printErrorMessage(3);
		cout << endl;
		calcWinner(h, g, i, b, 0, a);
		return 0;
	}
	cout << endl;
	c = getBid2();
	isBidPriceGood(c,a);
	calcWinner(h, g, i, b, c, a);
	return 0;
}


void printErrorMessage(int num)
{
	if (num == 1) {
		cout << endl
			 << "  ERROR: Reserve not met, bid rejected" << endl << endl;
	} else if (num == 2) {
		cout << endl
			 << "  ERROR: Negative price, bid rejected" << endl << endl;
	} else if (num == 3) {
		cout << endl
			 << "  ERROR: Blank bidder ID, no bid allowed" << endl << endl;
	} else if (num == 4) {
		cout << endl
			 << "ERROR: Neither bidder met Reserve, auction canceled" << endl << endl;
	} else if (num == 5) {
		cout << endl
			 << "ERROR: Reserve is not positive, auction canceled" << endl << endl;
	} else {
		cout << "   This should never print" << endl << endl;
	}
}

this is what i have thus far.

Now, when i submit the file to an automated checker, i receive some serious errors.

Your code could not be compiled. The following
compilation errors were reported:

begin compilation errors ================================
/z/grader/Grade/P2/rm_main.pl auction.cpp auction_nomain.cpp
g++ auction_nomain.cpp -I/z/grader/Grade/P2/ /z/grader/Grade/P2/test_harness.o -o P2_fn_test.exe
/z/grader/Grade/P2/test_harness.o: In function `main':
test_harness.cpp:(.text+0x146): undefined reference to `getName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x238): undefined reference to `getName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x32a): undefined reference to `getName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x482): undefined reference to `getPrice(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x552): undefined reference to `getPrice(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x622): undefined reference to `getPrice(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
test_harness.cpp:(.text+0x6f2): undefined reference to `getPrice(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
collect2: ld returned 1 exit status
make: *** [P2_fn_test.exe] Error 1

These are errors that the autograder receives upon attempted compilation.

I can't figure out what i'm doing wrong.

Anyone have any idea?
Thanks

Edit::

I should add, the program compiles and runs beautifully. I really do not understand why the autograder fails to compile.

[histrungalot]

What happens if you comment out

string getName(string bidder1);
string getName2(string bidder2);
string getLot(string lotName);
double getPrice(double reservePrice);

They are declared but not defined and I wonder it that's what is doesn't like.