#include < iostream> 井字棋using namespace std const int n=3 int block[n][n]={0,0,0,0,0,0,0,0,0} void draw(int **,int x,int c) -# Include < iostream>　using namespace std　const int n = 3　int block [n] [n] = {0,0,0,0,0,0,0,0,0}　void draw (int**, int x, int c)