View Compilation Error

0_0_22685008_5423.cpp: In function 'int main()':
0_0_22685008_5423.cpp:21:33: error: 'memset' was not declared in this scope
         memset(map,0,sizeof(map));
                                 ^
0_0_22685008_5423.cpp: In function 'int bfs()':
0_0_22685008_5423.cpp:35:34: error: 'memset' was not declared in this scope
     memset(path, -1, sizeof(path));
                                  ^