Help with Music arrangement database (iTunes-like)

Ben Conover (16)
I'm supposed to "construct an iTunes-like database to hold at least 10 song/artist/album records."
This is what I have so far:
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#include <iostream>
#include <string>

using namespace std;

int printMenu( );
void printDatabase( );
void changeSong( );
void changeArtist( );
void changeAlbum( );

int operation;

//database
string Song[10];
string Artist[10];
string Album[10];


int main()
{ //start main****
{
Song[1] = "Combination";
Artist[1] = "Aerosmith";
Album[2] = "Rocks";
}
{
Song[2] = "Lonely";
Artist[2] = "Akon";
Album[2] = "Trouble";
}
{
Song[3] = "Nightclub";
Artist[3] = "Birdman";
Album[3] = "Pricele$$";
}
{
Song[4] = "You";
Artist[4] = "Candlebox";
Album[4] = "Candlebox";
}
{
Song[5] = "Mosh";
Artist[5] = "Eminem";
Album[5] = "Encore";
}
{
Song[6] = "Changes";
Artist[6] = "Godsmack";
Album[6] ="Faceless";
}
{
Song[7] = "Fuel";
Artist[7] = "Metallica";
Album[7] = "Reload";
}
{
Song[8] = "Lithium";
Artist[8] = "Nirvana";
Album[8] = "Nevermind";
}
{
Song[9] = "Gasoline";
Artist[9] = "Seether";
Album[9] = "Disclamer";
}
{
Song[10] = "Mudshovel";
Artist[10] = "Staind";
Album[10] = "Dysfunction";
}
printDatabase ();
while (true)
{operation = printMenu ();
cout << operation << endl;
}
} //end main ****

// function to print a menu and get the user choice
int printMenu( )
{
int x;
cout << "  _________________________________ "<< endl;
cout << " |                                 |"<< endl;
cout << "||     1. Print Entire Database    |"<< endl; 
cout << "||     2. Change Song              |"<< endl;   
cout << "||     3. Change Artist            |"<< endl;
cout << "||     4. Change Album             |"<< endl;
cout << "||     0. Exit Program             |"<< endl;
cout << "||_________________________________|"<< endl; 
cout << "||||||||||||||||||||||||||||||||||| "<< endl; 
cout << endl;
cout << "Please enter choice: ";
cin >> x;
return x;


		switch (x)		//choices
		{
				case '0': return 0;
				
				case '1': 
				   
				   printDatabase( );
				   break;
				   
				case '2':
					
					changeSong ( );
					break;
					
				case '3':
					
					changeArtist ( );
					break;
					
				case '4':
					
					changeAlbum ( );
					break;
					}
}



I get:
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C:\Users\Ben\AppData\Local\Temp\cck8X9uI.o: In function `main':
Lab5.cpp:72: undefined reference to `printDatabase(void)'
C:\Users\Ben\AppData\Local\Temp\cck8X9uI.o: In function `printMenu(void)':
Lab5.cpp:104: undefined reference to `printDatabase(void)'
Lab5.cpp:109: undefined reference to `changeSong(void)'
Lab5.cpp:114: undefined reference to `changeArtist(void)'
Lab5.cpp:119: undefined reference to `changeAlbum(void)'
collect2: ld returned 1 exit status

 ----jGRASP wedge2: exit code for process is 1.
 ----jGRASP: operation complete.
novablows (35)
You didn't give your functions any definitions?
Ben Conover (16)
how do I do that?
novablows (35)
The same way you did for Printmenu. But as you said you are not finished yet so maybe you've yet to define them
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