error LNK2019

[UrbnCampr02]

I am currently working on an Account login system and when I run the program I receive this error message:

error LNK2019: unresolved external symbol

If you want to see the full code of the source file just ask

const int NUM_OF_ACCOUNTS = 1;

Account *account = new Account[NUM_OF_ACCOUNTS];

int AccountSearch(int number, string password);

foundAccount = AccountSearch(aNumSearch, passSearch);

			int AccountSearch(int n, string p);
				{
					int x = 0;
					for(; x < NUM_OF_ACCOUNTS; x++)
					{
						if(account[x].getAccNum() == number && 
							account[x].getPassword() == password)
							return x;
					}
						return x;
				}

			if (foundAccount == 0)
			{
				cout << "Your account was not found or you entered"
					"a invalid account number and/or passoword." << endl;
			}
			else
			{
				cout << "You are now logged into your account..." << endl;
				cout << "-------------------------------------" << endl;
			}

[LB]

Give the full error message, it tells you which symbol is unresolved. It is not related to a specific line of code - rather, it (usually) means that some function hasn't been defined.

[UrbnCampr02]

Ok, here is the full error message:

error LNK2019: unresolved external symbol "int __cdecl AccountSearch(int,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)"

(?AccountSearch@@YAHHV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@

@std@@@Z) referenced in function _main

[LB]

Did you define the AccountSearch function?

[UrbnCampr02]

Yes would that be this line:

int AccountSearch(int number, string password);

or am I missing something ?

[S G H]

You just declared it, you need to define it also.

int MyFunction(int); // <- declaration

int MyFunction(int param)
{
    return param + 1;
} // <- definition 

[UrbnCampr02]

is it not this:

int AccountSearch(int n, string p);
	{
		int x = 0;
		for(; x < NUM_OF_ACCOUNTS; x++)
		{
			if(account[x].getAccNum() == number && 
				account[x].getPassword() == password)
				return x;
		}
			return x;
	}

I also think I should note this is being used in a case switch

[LB]

1. You can't define a function inside another function
2. That semicolon at the end of the line makes it a declaration, and so the braces with code in them are just more code to execute. Did you not notice that you couldn't use n and p?