View Compilation Error

0_0_16831033_8681.cpp: In function 'bool bfs()':
0_0_16831033_8681.cpp:12:30: error: 'memset' was not declared in this scope
  memset(level,0,sizeof(level));
                              ^
0_0_16831033_8681.cpp: In function 'int main(int, char**)':
0_0_16831033_8681.cpp:59:33: error: 'memset' was not declared in this scope
         memset(cap,0,sizeof(cap));
                                 ^