View Compilation Error

0_0_33326823_13592.cpp: In function 'int main()':
0_0_33326823_13592.cpp:7:27: error: 'memset' was not declared in this scope
     memset(dp,0,sizeof(dp));
                           ^
0_0_33326823_13592.cpp:13:15: error: 'cin' was not declared in this scope
         while(cin>>n,n)
               ^
0_0_33326823_13592.cpp:13:15: note: suggested alternative:
In file included from 0_0_33326823_13592.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^