Rezumat problemă

ProdusCifreImpare

#65

Să se scrie un program care să determine produsul cifrelor impare ale unui număr natural citit de la tastatură.

Consola Candale Silviu (silviu) Silviu Candale ușoară

Clasa 9 Algoritmi elementari Cifrele unui număr

Rezolvă

Detalii

Problema	ProdusCifreImpare	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64629230	Utilizator	potec filip (DaBebzi)
Fișier	produscifreimpare.cpp	Dimensiune	356 B
Data încărcării	19 Mai 2026, 12:38	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

produscifreimpare.cpp: In function ‘int main()’:
produscifreimpare.cpp:23:18: error: no match for ‘operator-’ (operand types are ‘std::ostream’ {aka ‘std::basic_ostream<char>’} and ‘int’)
   23 |             cout -1;
      |             ~~~~ ^~
      |             |     |
      |             |     int
      |             std::ostream {aka std::basic_ostream<char>}
produscifreimpare.cpp:23:18: note: candidate: ‘operator-(int, int)’ (built-in)
   23 |             cout -1;
      |             ~~~~~^~
produscifreimpare.cpp:23:18: note:   no known conversion for argument 1 from ‘std::ostream’ {aka ‘std::basic_ostream<char>’} to ‘int’
In file included from /usr/include/c++/13/string:48,
                 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 produscifreimpare.cpp:1:
/usr/include/c++/13/bits/stl_iterator.h:625:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) std::operator-(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)’
  625 |     operator-(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:625:5: note:   template argument deduction/substitution failed:
produscifreimpare.cpp:23:19: note:   ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’
   23 |             cout -1;
      |                   ^
/usr/include/c++/13/bits/stl_iterator.h:1800:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)’
 1800 |     operator-(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1800:5: note:   template argument deduction/substitution failed:
produscifreimpare.cpp:23:19: note:   ‘std::ostream’ {aka ‘std::basic_ostream<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’
   23 |             cout -1;
      |                   ^

Cum funcționează evaluarea?