#include "library.h"
using namespace std;
void main()
{

	cout << "\n\nWelcome to Dark Blade!\n";
	cout << "programmed by Louis Gonzalez\n\n";

	cout << "An Evil Demon Creature Known As The Wraith Lord Has Taken Control Of The\nWorld. He Controls A Vast Army Of Evil Creatures Who Kill People For Fun. You Must Rise\nAgainst The Wraith Lord And Kill All His Minions.\n\n";
	
	Wait();

	Crossroads();

	cout << "\n\nThank You For Playing Dark Blade! Please Play Again Soon.\n\n";
}
#include "library.h"
bool glcomplete = false;
bool fcomplete = false;
bool scomplete = false;
bool gcomplete = false;
bool ccomplete = false;

bool Crossroads()
{
	int choice = 0;


while (choice != 10)
{
	cout << "You Stand At The Center Of Several Roads Going Off In Many Dirrections.\n";
	cout << "There Is A Small Town Behind You Full Of Shops And People.\n\n";
	

	cout << "Which Path Do You Choose?\n";
	cout << "1: Town\n";
	cout << "2: Summoning Portal\n";

	if (!glcomplete)
		cout << "3: Grasslands Road (Quest)\n";

	if (glcomplete && !fcomplete)
		cout << "4: Forest Road (Quest)\n";

	if (fcomplete && !scomplete)
		cout << "5: Swamp Road (Quest)\n";

	if (scomplete && !gcomplete)
		cout << "6: Graveyard Road (Quest)\n";

	if (gcomplete && !ccomplete)
		cout << "7: Castle Road (Quest)\n";

	cout << "10: Exit Game\n";

	cout << ">";

	cin >> choice;

	switch (choice)
	{
	case 1:
		{
			Town();
			break;
		}
	case 2:
		{
		//summoportal();
			break;
		}
	case 3:
	{
	//Grasslands();
		break;
	}
	case 4:
		{
		//if (glcomplete && !fcomplete)
			//Forest();
			break;
		}
	case 5:
		{
		//if (fcomplete && !scomplete)
			//Swamp();
			break;
		}
	case 6:
		{
		//if (scomplete && !gcomplete)
			//Graveyard();
			break;
		}
	case 7:
		{
		//if (gcomplete && !ccomplete)
			//Castle();
			break;
		}
		

	}

	
}
	return true;
}
#include "library.h"
bool Town()
{
	int choice = 0;

	while (choice != -1)
	{
	cout << "You are Walking Into A Town.\n";
	cout << "All Around You There Are People Going About Their Daily Lives.\n";
	cout << "To Your Left You Spot An Inn And To Your Right You Spot The Armory And An Item Shop\n\n";
	
	Wait();

	cout << endl;

	cout << "what would you like to do?\n";
cout << "1: Enter INN\n";
cout << "2: Enter Armory\n";
cout << "3: Enter Item Shop\n";
cout << "4: Check Stats\n";
cout << "5: Leave Town\n";

cout << ">";

cin >> choice;

switch (choice)
{case 1:
{ 
//Inn();
break;
}
case 2:
	{
	//Armory();
	break;
	}
case 3:
	{
	//itemshop();
	break;
	}
case 4:
	{
		//stats();
		break;
	}
}
	}
	return true;
}
#include "library.h"
bool Battle()
{
	return true;
}
#include "library.h"


void Wait()
{
	cout << "Press Enter to continue\n";

	cin.ignore(1);

}

That is my code and it says error LNK2001 while I build it
help me

That error message mesans undefined external -- you forgot to code something. The error message should also have told you what the linker was looking for.

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