View Compilation Error

0_0_29833818_4538.cpp:1:5: error: stray '#' in program
 4545#include<iostream>
     ^
0_0_29833818_4538.cpp:1:1: error: expected unqualified-id before numeric constant
 4545#include<iostream>
 ^
0_0_29833818_4538.cpp: In function 'int main()':
0_0_29833818_4538.cpp:10:8: error: 'cin' was not declared in this scope
  while(cin>>n&&n)
        ^