Error with external symbol?

For some reason I keep getting the following error:
error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup

I'm sure it's a quick fix but I can't find a way around it. I tried re creating the project because I know sometimes that works, but it didn't.

Here's the code.

Code:

#include "stdafx.h"
#include <cstdlib>
#include <ctime>
#include <iostream>

using namespace std;
void fct() 
{
int arr[10];
int * aptr = arr;
srand((unsigned int)time(0));
for (aptr = arr; aptr<=&arr[9];aptr++)
{
*aptr = rand() % 41;
cout << *aptr << '\t' << aptr << endl;
}
}

Please help me fix it. I'm almost done!

You haven't created a main function! Every C++ program needs a main function, otherwise it won't run.