View Compilation Error

0_0_18829442_6813.cpp:1:11: error: #include expects "FILENAME" or <FILENAME>
 #include  
           ^
0_0_18829442_6813.cpp: In function 'int main()':
0_0_18829442_6813.cpp:6:11: error: 'cin' was not declared in this scope
     while(cin>>n) 
           ^
0_0_18829442_6813.cpp:16:13: error: 'cout' was not declared in this scope
             cout<<a[j]; 
             ^
0_0_18829442_6813.cpp:17:8: error: 'cout' was not declared in this scope
        cout<<endl; 
        ^
0_0_18829442_6813.cpp:17:14: error: 'endl' was not declared in this scope
        cout<<endl; 
              ^