View Compilation Error

0_0_18024081_30465.cpp:1:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18024081_30465.cpp:2:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18024081_30465.cpp:3:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18024081_30465.cpp:4:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18024081_30465.cpp:5:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18024081_30465.cpp: In function 'int main()':
0_0_18024081_30465.cpp:13:25: error: 'scanf' was not declared in this scope
     while(~scanf("%d",&n))
                         ^
0_0_18024081_30465.cpp:15:37: error: 'memset' was not declared in this scope
         memset(_hash,0,sizeof(_hash));
                                     ^
0_0_18024081_30465.cpp:16:9: error: 'i' was not declared in this scope
         i...        
         ^
0_0_18024081_30465.cpp:16:10: error: expected '}' at end of input
         i...        
          ^
0_0_18024081_30465.cpp:16:10: error: expected '}' at end of input