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View Compilation Error

0_0_26522021_1985.cpp:2:7: error: expected nested-name-specifier before 'naamespace'
 using naamespace std;
       ^
0_0_26522021_1985.cpp: In function 'int main()':
0_0_26522021_1985.cpp:5:1: error: 'string' was not declared in this scope
 string s;
 ^
0_0_26522021_1985.cpp:5:1: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iosfwd:39:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_26522021_1985.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stringfwd.h:62:33: note:   'std::string'
   typedef basic_string<char>    string;   
                                 ^
0_0_26522021_1985.cpp:7:15: error: 'cin' was not declared in this scope
 while(getline(cin,s)){
               ^
0_0_26522021_1985.cpp:7:15: note: suggested alternative:
In file included from 0_0_26522021_1985.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_26522021_1985.cpp:7:19: error: 's' was not declared in this scope
 while(getline(cin,s)){
                   ^
0_0_26522021_1985.cpp:7:20: error: 'getline' was not declared in this scope
 while(getline(cin,s)){
                    ^
0_0_26522021_1985.cpp:7:20: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_26522021_1985.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:2827:5: note:   'std::getline'
     getline(basic_istream<_CharT, _Traits>&& __is,
     ^
0_0_26522021_1985.cpp:11:1: error: expected ')' before '{' token
 {
 ^
0_0_26522021_1985.cpp:16:1: error: expected ')' before 'level'
 level++;
 ^
0_0_26522021_1985.cpp:22:1: error: 'cout' was not declared in this scope
 cout<<level<<endl;
 ^
0_0_26522021_1985.cpp:22:1: note: suggested alternative:
In file included from 0_0_26522021_1985.cpp:1:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_26522021_1985.cpp:22:14: error: 'endl' was not declared in this scope
 cout<<level<<endl;
              ^
0_0_26522021_1985.cpp:22:14: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
                 from 0_0_26522021_1985.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:564:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^


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