Rezumat problemă

CubPrim

#2568

Definim prin număr cubprim, numărul natural obținut dintr-un număr prim la puterea a treia. Se dă un șir de N numere naturale oarecare\({x}_{1}, {x}_{2}, … {x}_{n}\). Se cere se afișeze M – numărul de numere cubprim și apoi pe următoarele M linii, descrescător după valoarea numărului cubprim de la cerința a), poziția pe care se află acest număr, numărul prim din care este format, precum și numărul cubprim astfel găsit.

ad-hoc

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Rezolvă

Detalii

Problema	CubPrim	Operații I/O	cubprim.in/cubprim.out
Limita timp	0.4 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64785165	Utilizator	Vînturiș Andrei Alexandru (AlexVinturis)
Fișier	cubprim.cpp	Dimensiune	1.26 KB
Data încărcării	31 Mai 2026, 10:21	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

cubprim.cpp: In function ‘int main()’:
cubprim.cpp:61:13: error: no match for ‘operator<<’ (operand types are ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} and ‘int’)
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |         ~~~ ^~~~~~~~~~
      |         |          |
      |         |          int
      |         std::ifstream {aka std::basic_ifstream<char>}
cubprim.cpp:61:13: note: candidate: ‘operator<<(int, int)’ (built-in)
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |         ~~~~^~~~~~~~~~
cubprim.cpp:61:13: note:   no known conversion for argument 1 from ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} to ‘int’
In file included from /usr/include/c++/13/string:54,
                 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 cubprim.cpp:1:
/usr/include/c++/13/bits/basic_string.h:4032:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
 4032 |     operator<<(basic_ostream<_CharT, _Traits>& __os,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:4032:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
In file included from /usr/include/c++/13/bits/ios_base.h:46:
/usr/include/c++/13/system_error:339:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const error_code&)’
  339 |     operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
      |     ^~~~~~~~
/usr/include/c++/13/system_error:339:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:554:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, _CharT)’
  554 |     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:554:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:564:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, char)’
  564 |     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:564:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:570:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, char)’
  570 |     operator<<(basic_ostream<char, _Traits>& __out, char __c)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:570:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:581:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, signed char)’
  581 |     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:581:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:586:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, unsigned char)’
  586 |     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:586:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:645:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const _CharT*)’
  645 |     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:645:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
In file included from /usr/include/c++/13/ostream:880:
/usr/include/c++/13/bits/ostream.tcc:307:5: note: candidate: ‘template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(basic_ostream<_CharT, _Traits>&, const char*)’
  307 |     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/bits/ostream.tcc:307:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<_CharT, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:662:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const char*)’
  662 |     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:662:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:675:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const signed char*)’
  675 |     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:675:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:680:5: note: candidate: ‘template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(basic_ostream<char, _Traits>&, const unsigned char*)’
  680 |     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:680:5: note:   template argument deduction/substitution failed:
cubprim.cpp:61:20: note:   ‘std::ifstream’ {aka ‘std::basic_ifstream<char>’} is not derived from ‘std::basic_ostream<char, _Traits>’
   61 |         out <<v[i].poz<< " " << v[i].vi<<" " << v[i].vf<< endl;
      |                    ^~~
/usr/include/c++/13/ostream:801:5: note: candidate: ‘template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&)’
  801 |     operator<<(_Ostream&& __os, const _Tp& __x)
      |     ^~~~~~~~
/usr/include/c++/13/ostream:801:5: note:   template argument deduction/substitution failed:
/usr/include/c++/13/ostream: In substitution of ‘template<class _Ostream, class _Tp> _Ostream&& std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_ifstream<char>&; _Tp = int]’:
cubprim.cpp:61:20:   required from here
/usr/include/c++/13/ostream:801:5: error: no type named ‘type’ in ‘struct std::enable_if<false, void>’

Cum funcționează evaluarea?