Rezumat problemă

AfisareNumere2

#3231

Se dă un număr natural n. Afișați pe o linie primele n numere naturale nenule în ordine crescătoare, iar pe linia următoare aceleași numere, dar în ordine descrescătoare.

Consola Candale Silviu (silviu) Silviu Candale ușoară

Clasa 9 Elemente de baza ale limbajului Structuri repetitive

Rezolvă

Detalii

Problema	AfisareNumere2	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64903360	Utilizator	stoica maia (m_aia)
Fișier	afisarenumere2.cpp	Dimensiune	289 B
Data încărcării	11 Iunie 2026, 08:38	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

afisarenumere2.cpp: In function ‘int main()’:
afisarenumere2.cpp:8:10: error: ‘i’ was not declared in this scope
    8 |     for (i=1; i<=n; i++) {
      |          ^
afisarenumere2.cpp:13:19: error: no match for ‘operator>>’ (operand types are ‘std::basic_ostream<char>’ and ‘const char [2]’)
   13 |         cout << i >> " ";
      |         ~~~~~~~~~ ^~ ~~~
      |              |       |
      |              |       const char [2]
      |              std::basic_ostream<char>
In file included from /usr/include/c++/13/string:55,
                 from /usr/include/c++/13/bits/locale_classes.h:40,
                 from /usr/include/c++/13/bits/ios_base.h:41,
                 from /usr/include/c++/13/ios:44,
                 from /usr/include/c++/13/ostream:40,
                 from /usr/include/c++/13/iostream:41,
                 from afisarenumere2.cpp:1:
/usr/include/c++/13/bits/basic_string.tcc:827:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
  827 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.tcc:827:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
In file included from /usr/include/c++/13/istream:1106,
                 from /usr/include/c++/13/iostream:42:
/usr/include/c++/13/bits/istream.tcc:975:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)’
  975 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/13/bits/istream.tcc:975:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:846:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)’
  846 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/13/istream:846:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<char, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:851:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)’
  851 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/13/istream:851:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<char, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:893:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)’
  893 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/13/istream:893:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<_CharT, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:936:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)’
  936 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/istream:936:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<char, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:942:5: note: candidate: ‘template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)’
  942 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/istream:942:5: note:   template argument deduction/substitution failed:
afisarenumere2.cpp:13:22: note:   ‘std::basic_ostream<char>’ is not derived from ‘std::basic_istream<char, _Traits>’
   13 |         cout << i >> " ";
      |                      ^~~
/usr/include/c++/13/istream:1096:5: note: candidate: ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)’
 1096 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/13/istream:1096:5: note:   template argument deduction/substitution failed:
/usr/include/c++/13/istream: In substitution of ‘template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::basic_ostream<char>&; _Tp = const char (&)[2]]’:
afisarenumere2.cpp:13:22:   required from here
/usr/include/c++/13/istream:1096:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’

Cum funcționează evaluarea?