将程序与模板化 main 链接失败

问：

LNK2019函数“int __cdecl invoke_main（void）”（？invoke_main@@YAHXZ） 中引用_main未解析的外部符号

我可以编译我的程序，但不能运行它。它是一个 Windows 控制台应用程序，在 中是这样设置的。Linker -> System -> SubSystem

#include "stdafx.h"
#include <iostream>
#include <queue>
#include "puzzle.h"
#include "state.h"
#include <vector>

using namespace std;

template <typename Puzzle, typename State>
int main()
{
    Puzzle puzzle8;
    State goalState = new State();
    State currentState = new State();

    //goal state
    goalState.board = { { 1, 2, 3 },
                        { 4, 5, 6 },
                        { 7, 8, 0 } };
    //start state
    currentState.board = { { 8, 2, 1 },
                            { 5, 6, 0 },
                            { 3, 7, 4 } };

    puzzle8.visited.push_back(currentState); //add to visited

    while (!isGoalState(currentState, goalState))
    {           
        int f, best;
        int board1Cost, board2Cost, board3Cost, board4Cost;
        vector<State> newStates = expand(currentState);
        int bestState = getLowestCost(newStates);

        currentState = newStates.at(bestState).board;
        cout << "New State found:" << endl;
        printState(currentState);
        puzzle8.visited.push_back(currentState);

    }
    return 0;
}