View Compilation Error

0_0_22408861_14889.cpp:2:7: error: expected nested-name-specifier before 'namesspace'
 using namesspace std;
       ^
0_0_22408861_14889.cpp: In function 'int main()':
0_0_22408861_14889.cpp:7:8: error: 'cin' was not declared in this scope
  while(cin>>N&&N!=0)
        ^
0_0_22408861_14889.cpp:7:8: note: suggested alternative:
In file included from 0_0_22408861_14889.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_22408861_14889.cpp:9:11: error: expected primary-expression before ')' token
   for(i=0;)
           ^
0_0_22408861_14889.cpp:9:11: error: expected ';' before ')' token
0_0_22408861_14889.cpp:11:2: error: expected primary-expression before '}' token
  }
  ^