Rezumat problemă

NrVocale

#890

Se dă o propoziție formată din litere mari și mici ale alfabetului englez, cifre, spații și semne de punctuație, în care literele mari și mici se consideră identice. Determinați vocala din șir cu număr maxim de apariții.

Consola Candale Silviu (silviu) ușoară

Clasa 10 Şiruri de caractere Prelucrări elementare pe șiruri de caractere

Rezolvă

Detalii

Problema	NrVocale	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#63262563	Utilizator	Diugan Elizabet (Elizabet09)
Fișier	nrvocale.cpp	Dimensiune	1.08 KB
Data încărcării	24 Februarie 2026, 08:38	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

nrvocale.cpp: In function 'int main()':
nrvocale.cpp:9:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i<strlen(s) ;i++) {

                                   ^
nrvocale.cpp:11:17: error: 'S' was not declared in this scope
             if (S[i] == 'a' ||S[i] == 'A' )

                 ^
nrvocale.cpp:27:21: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'char')
                 cout>>'A';

                     ^
nrvocale.cpp:27:21: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'A';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:27:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'A';

                       ^
nrvocale.cpp:30:21: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'char')
                 cout>>'E';

                     ^
nrvocale.cpp:30:21: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'E';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:30:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'E';

                       ^
nrvocale.cpp:33:21: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'char')
                 cout>>'I';

                     ^
nrvocale.cpp:33:21: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'I';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:33:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'I';

                       ^
nrvocale.cpp:36:21: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'char')
                 cout>>'O';

                     ^
nrvocale.cpp:36:21: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'O';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:36:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'O';

                       ^
nrvocale.cpp:39:21: error: no match for 'operator>>' (operand types are 'std::ostream {aka std::basic_ostream<char>}' and 'char')
                 cout>>'U';

                     ^
nrvocale.cpp:39:21: note: candidates are:
In file included from /usr/include/c++/4.8/string:53:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&)
     operator>>(basic_istream<_CharT, _Traits>& __in,
     ^
/usr/include/c++/4.8/bits/basic_string.tcc:996:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:955:5: note: template<class _CharT2, class _Traits2> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT2*)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
     ^
/usr/include/c++/4.8/bits/istream.tcc:955:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/bits/istream.tcc:923:5: note: template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&, _CharT&)
     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
     ^
/usr/include/c++/4.8/bits/istream.tcc:923:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:727:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char&)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
     ^
/usr/include/c++/4.8/istream:727:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:732:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char&)
     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
     ^
/usr/include/c++/4.8/istream:732:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:774:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, unsigned char*)
     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
     ^
/usr/include/c++/4.8/istream:774:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:779:5: note: template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(std::basic_istream<char, _Traits>&, signed char*)
     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
     ^
/usr/include/c++/4.8/istream:779:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
                 cout>>'U';

                       ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from nrvocale.cpp:1:
/usr/include/c++/4.8/istream:872:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&)
     operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x)
     ^
/usr/include/c++/4.8/istream:872:5: note:   template argument deduction/substitution failed:
nrvocale.cpp:39:23: note:   'std::ostream {aka std::basic_ostream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
                 cout>>'U';

                       ^

Cum funcționează evaluarea?