View Compilation Error

0_0_13903935_24493.cpp: In function 'int main()':
0_0_13903935_24493.cpp:28:27: error: 'memset' was not declared in this scope
   memset(map,0,sizeof(map));
                           ^
0_0_13903935_24493.cpp:35:7: error: 'i' was not declared in this scope
   for(i=0;i<N;i++)
       ^