View Compilation Error

0_0_32633047_5613.cpp: In function 'int bfs(node, node)':
0_0_32633047_5613.cpp:20:29: error: 'memset' was not declared in this scope
     memset(vis,0,sizeof(vis));
                             ^
0_0_32633047_5613.cpp: In function 'int main()':
0_0_32633047_5613.cpp:91:34: error: 'memset' was not declared in this scope
         memset(dis,-1,sizeof(dis));
                                  ^