unresolved external error

[dheredhere]

Hey guys,
I'm about 2 months into c++ and I've written a fairly simply code for the High Low Game in which the system generates a number and the user has to guess the number.
However, fatal error LNK1120: 1 unresolved externals keeps coming up.
Any help would be appreciated.
Thanks in advance

Syntax:

//High Lo Number Guessing Game
#include <iostream>
#include "time.h"

using namespace std;

void main ()
{
	while (1)
	{
	int num, guess;
	srand(time(0));
	num = rand () % 100 + 1;
	
	cout << "Guess a number (1-100): " << endl;
	
	do
	{
		cin >> guess;
		if (guess > num)
			cout << "Too high" << endl;
		if (guess < num) 
			cout << "Too Low" << endl;
		if (guess == num) 
		{
			cout << "Good Job. You guessed it" << endl;
			break;
		}
			
	}
	while (guess != num)
	loop:
		cout << " Would you like to play again? (y or n)" << endl;
	char ans;
		cin << ans;
		if ( ans== y)
			continue;
		else if (ans == n)
		{cout << "Thankyou for playing! /nGood Bye" << endl;
		break;}
		else if (ans != y && ans != n)
		{	cout << "Invalid Entry/nEnter y for yes or n for no" << endl;
			goto loop;
		}
		
		
	}

}

[long double main]

What exactly is the error? (hang on - let me guess)

To use rand(), you need to have #include <cstdlib> in there.

Also, it should be int main(), not void main().
And since it's C++ (not C), you can (should?) also just put #include <ctime> , rather than #include "time.h" (but nothing will happen in this case if you just leave it as it is).

[Disch]

Don't give us the abridged version of the error. Give us the entire error. You left out the most important part of the error message (ie: what symbol the linker is failing to find) so it's impossible for us to help you solve it.

Also, there are a lot more problems with this than just the linker error. In addition to what "long double main" said....

- don't call srand before every call to rand. srand should be called exactly ONCE. Don't call it for every random number.

- Your while loop on line 31 is missing an open brace.

- why do you have a loop: label and matching goto? You're already inside a while loop! Just let the while loop keep the loop going -- that's what it's there for.

- I don't see where you declared y or n. Those are variables, and you are treating them like literals. Just naming a variable y doesn't mean it represents the character 'y'. It be like saying int five; and expecting that variable to equal 5 just because of its name. It doesn't work that way. Variable names mean nothing to the computer. You want to use a literal 'y' and 'n':

if(ans == 'y') // <- note the apostrophes

- on line 35 you are using << with cin. You meant to use >>

[cire]

- Your while loop on line 31 is missing an open brace.

That's actually the tail end of his do-while loop which is missing a ;

I'm guessing his crappy formatting is why he felt it necessary to use a label and goto statement.

I don't know how you get to linker errors, since your code doesn't compile.

[dheredhere]

Thanks guys