View Compilation Error

0_0_37170373_9290.cpp: In function 'void dfs(int, int, int)':
0_0_37170373_9290.cpp:29:30: error: 'visit' was not declared in this scope
         if(map[dx][dy]!='X'&&visit[dx][dy]==0)
                              ^
0_0_37170373_9290.cpp: In function 'int main()':
0_0_37170373_9290.cpp:50:16: error: 'visit' was not declared in this scope
         memset(visit,0,sizeof(visit));
                ^