View Compilation Error

0_0_22943210_25180.cpp: In function 'int main()':
0_0_22943210_25180.cpp:8:4: error: 'cin' was not declared in this scope
    cin>>n;
    ^
0_0_22943210_25180.cpp:8:4: note: suggested alternative:
In file included from 0_0_22943210_25180.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
                  ^
0_0_22943210_25180.cpp:16:38: error: 'memset' was not declared in this scope
            memset(temp,0,sizeof(temp));
                                      ^
0_0_22943210_25180.cpp:35:5: error: 'cout' was not declared in this scope
     cout<<max;
     ^
0_0_22943210_25180.cpp:35:5: note: suggested alternative:
In file included from 0_0_22943210_25180.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^