Rezumat problemă

Aranjamente

#196

Se citesc două numere naturale nenule n și k. Să se afişeze, în ordine lexicografică, aranjamentele de câte k elemente ale mulţimii {1,2,..,n}.

Fișiere Candale Silviu (silviu) ușoară

Clasa 11 Backtracking Elemente de combinatorică

Rezolvă

Detalii

Problema	Aranjamente	Operații I/O	aranjamente.in/aranjamente.out
Limita timp	0.5 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#56701512	Utilizator	Pasca Maria (Pasca_Maria17)
Fișier	aranjamente.cpp	Dimensiune	679 B
Data încărcării	03 Martie 2025, 11:47	Scor / rezultat	Eroare de compilare

Evaluare

Mesaj compilare

aranjamente.cpp: In function 'void back(int)':
aranjamente.cpp:34:6: error: expected ';' before 'else'
      else back(k+1);                   }

      ^
aranjamente.cpp: In function 'int main()':
aranjamente.cpp:40:13: error: no match for 'operator>>' (operand types are 'std::ofstream {aka std::basic_ofstream<char>}' and 'int')
            f>>n;

             ^
aranjamente.cpp:40:13: 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 aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/istream:882:0,
                 from /usr/include/c++/4.8/iostream:40,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<char, _Traits>'
            f>>n;

               ^
In file included from /usr/include/c++/4.8/iostream:40:0,
                 from aranjamente.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:
aranjamente.cpp:40:15: note:   'std::ofstream {aka std::basic_ofstream<char>}' is not derived from 'std::basic_istream<_CharT, _Traits>'
            f>>n;

               ^
aranjamente.cpp: At global scope:
aranjamente.cpp:43:5: error: expected unqualified-id before 'return'
     return 0;

     ^
aranjamente.cpp:44:1: error: expected declaration before '}' token
 }

 ^

Cum funcționează evaluarea?