View Compilation Error

0_0_19170716_25336.cpp:1:31: error: stray '#' in program
 <span style="font-size:18px;">#include <iostream>
                               ^
0_0_19170716_25336.cpp:1:1: error: expected unqualified-id before '<' token
 <span style="font-size:18px;">#include <iostream>
 ^
0_0_19170716_25336.cpp: In function 'int main()':
0_0_19170716_25336.cpp:32:8: error: 'cin' was not declared in this scope
  while(cin>>n>>r)
        ^
0_0_19170716_25336.cpp:39:11: error: 'cout' was not declared in this scope
   if(n<0) cout<<"-";
           ^
0_0_19170716_25336.cpp:43:4: error: 'cout' was not declared in this scope
    cout<<arr[i];
    ^
0_0_19170716_25336.cpp:44:3: error: 'cout' was not declared in this scope
   cout<<endl;
   ^
0_0_19170716_25336.cpp:44:9: error: 'endl' was not declared in this scope
   cout<<endl;
         ^
0_0_19170716_25336.cpp: At global scope:
0_0_19170716_25336.cpp:47:2: error: expected unqualified-id before '<' token
 }</span>
  ^