c++ Simple Game of Life

// function::operator bool example
#include <iostream>	  // std::cout
#include <functional> // std::function, std::plus
#include <ctime>
#include <set>
#include <thread>
#include <mutex>
#include <vector>
#include <windows.h>
using namespace std;
const static int32_t n = 10;
using Row = std::vector<int32_t>;
using MapN = std::vector<Row>;
MapN map;
bool checkIsAlive(const MapN &map, int32_t row, int32_t col);
int main()
{
	map.reserve(n);
	for (auto &row : map)
	{
		row.reserve(n);
	}
	map = {
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 1, 1, 0, 0, 0, 0},
		{0, 0, 0, 0, 1, 1, 0, 0, 0, 0},
		{0, 0, 1, 1, 0, 0, 0, 0, 0, 0},
		{0, 0, 1, 1, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
	};
	/
	while (true)
	{
		auto tmp_map = map;
		for (int rowi = 1; rowi < n - 1; rowi++)
		{
			for (int coli = 1; coli < n - 1; coli++)
			{
				tmp_map[rowi][coli] = checkIsAlive(map,rowi,coli);
			}
		}
		//show
		for (int rowi = 1; rowi < n - 1; rowi++)
		{
			for (int coli = 1; coli < n - 1; coli++)
			{
				cout<<map[rowi][coli];
			}
			cout<<endl;
		}
		cout<<"----------------------"<<endl;
		map.swap(tmp_map);
		Sleep(100); 

	};
}
bool checkIsAlive(const MapN &map, int32_t row, int32_t col)
{
	int32_t cell_7 = map[row - 1][col - 1];
	int32_t cell_8 = map[row - 1][col];
	int32_t cell_9 = map[row - 1][col + 1];
	int32_t cell_4 = map[row][col - 1];
	int32_t cell_6 = map[row][col + 1];
	int32_t cell_1 = map[row + 1][col - 1];
	int32_t cell_2 = map[row + 1][col];
	int32_t cell_3 = map[row + 1][col + 1];

	int32_t liveNum = cell_1 + cell_2 + cell_3 + cell_4 + cell_6 + cell_7 + cell_8 + cell_9;
	if (map[row][col] == 1)
	{
		if (liveNum == 2 || liveNum == 3)
		{
			return true;
		}
		return false;
	}
	else{
		if (liveNum ==3){
			return true;
		}
		return false;
	}
	return false;
}