View Compilation Error

0_0_35629817_19705.cpp: In function 'void search(int)':
0_0_35629817_19705.cpp:11:27: error: 'memset' was not declared in this scope
   memset(map,0,sizeof(map));
                           ^
0_0_35629817_19705.cpp: In function 'int main(int, char**)':
0_0_35629817_19705.cpp:27:32: error: 'memset' was not declared in this scope
    memset(vis,false,sizeof(vis));
                                ^