View Compilation Error

0_0_21134124_7145.cpp: In function 'bool bfs()':
0_0_21134124_7145.cpp:22:30: error: 'memset' was not declared in this scope
     memset(vis,-1,sizeof(vis));  
                              ^
0_0_21134124_7145.cpp: In function 'int main()':
0_0_21134124_7145.cpp:66:39: error: 'strcpy' was not declared in this scope
             strcpy(Map[1][i],Map[0][i]);//复制第二层楼   
                                       ^