Rezumat problemă

GenMat

#2541

Scrieți un program care citește de la tastatură un număr natural n și construiește în memorie o matrice cu n linii și n coloane, numerotate de la 1 la n, în care fiecare element aflat pe chenarul exterior al matricei este egal cu suma dintre indicele liniei și indicele coloanei pe care se află, iar fiecare dintre celelalte elemente este egal cu suma celor trei “vecini” situați pe coloana următoare.

Consola Candale Silviu (silviu) ușoară

Clasa 9 Tablouri bidimensionale (matrice) Generări de matrice

Rezolvă

Detalii

Problema	GenMat	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#58553664	Utilizator	Hutan Elias (Elias_Hutan3906)
Fișier	genmat.cpp	Dimensiune	533 B
Data încărcării	17 Iunie 2025, 14:55	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

genmat.cpp: In function 'int main()':
genmat.cpp:8:11: error: no match for 'operator<<' (operand types are 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' and 'int')
     cin>>n<<m;

           ^
genmat.cpp:8:11: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 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 genmat.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/iostream:39,
                 from genmat.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
     cin>>n<<m;

             ^
In file included from /usr/include/c++/4.8/iostream:39:0,
                 from genmat.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
genmat.cpp:8:13: note:   'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
     cin>>n<<m;

             ^
genmat.cpp:21:38: error: 'j_1' was not declared in this scope
             a[i][j]=a[i][j+1]+a[i-1][j_1]+a[i+1][j+1];

                                      ^

Cum funcționează evaluarea?