Rezumat problemă

Zona4

#1749

Considerăm o matrice pătratică cu N linii și N coloane. În această matrice sunt definite 4 zone:

• zona 1, formată din elementele situate strict deasupra diagonalei principale și strict deasupra diagonalei secundare;
• zona 2, formată din elementele situate strict deasupra diagonalei principale și strict sub diagonala secundară;
• zona 3, formată din elementele situate strict sub diagonala principală și strict sub diagonala secundară;
• zona 4, formată din elementele situate strict sub diagonala principală și strict deasupra diagonalei secundare;

Se dă o matrice pătratică și un număr natural Z, reprezentând o zonă din matrice. Să se determine suma elementelor din zona Z.

Consola Candale Silviu (silviu) ușoară

Clasa 9 Tablouri bidimensionale (matrice) Parcurgerea matricelor pătratice

Rezolvă

Detalii

Problema	Zona4	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64563560	Utilizator	Ursescu Elisabeta (ElisabetaUrsescu)
Fișier	zona4.cpp	Dimensiune	591 B
Data încărcării	14 Mai 2026, 13:50	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

zona4.cpp: In function ‘int main()’:
zona4.cpp:8:11: error: no match for ‘operator>’ (operand types are ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} and ‘int’)
    8 |     cin>>n>z;
      |     ~~~~~~^~
      |        |   |
      |        |   int
      |        std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
zona4.cpp:8:11: note: candidate: ‘operator>(int, int)’ (built-in)
    8 |     cin>>n>z;
      |     ~~~~~~^~
zona4.cpp:8:11: note:   no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<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 zona4.cpp:1:
/usr/include/c++/13/bits/stl_iterator.h:469:5: note: candidate: ‘template<class _Iterator> bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)’
  469 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:469:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’
    8 |     cin>>n>z;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:514:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)’
  514 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:514:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::reverse_iterator<_Iterator>’
    8 |     cin>>n>z;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:1725:5: note: candidate: ‘template<class _IteratorL, class _IteratorR> bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)’
 1725 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1725:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’
    8 |     cin>>n>z;
      |            ^
/usr/include/c++/13/bits/stl_iterator.h:1784:5: note: candidate: ‘template<class _Iterator> bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)’
 1784 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_iterator.h:1784:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::move_iterator<_IteratorL>’
    8 |     cin>>n>z;
      |            ^
In file included from /usr/include/c++/13/bits/stl_algobase.h:64,
                 from /usr/include/c++/13/string:51:
/usr/include/c++/13/bits/stl_pair.h:848:5: note: candidate: ‘template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)’
  848 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/13/bits/stl_pair.h:848:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::pair<_T1, _T2>’
    8 |     cin>>n>z;
      |            ^
In file included from /usr/include/c++/13/string:54:
/usr/include/c++/13/bits/basic_string.h:3870:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
 3870 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3870:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’
    8 |     cin>>n>z;
      |            ^
/usr/include/c++/13/bits/basic_string.h:3884:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)’
 3884 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3884:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} is not derived from ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’
    8 |     cin>>n>z;
      |            ^
/usr/include/c++/13/bits/basic_string.h:3897:5: note: candidate: ‘template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Alloc>&)’
 3897 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/13/bits/basic_string.h:3897:5: note:   template argument deduction/substitution failed:
zona4.cpp:8:12: note:   mismatched types ‘const _CharT*’ and ‘std::basic_istream<char>’
    8 |     cin>>n>z;
      |            ^
zona4.cpp:13:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   13 |     for(i=1;i<=n;i++)
      |     ^~~
zona4.cpp:20:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   20 |         if (z=1) cout<<s1;
      |         ^~
zona4.cpp:20:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   20 |         if (z=1) cout<<s1;
      |             ~^~
zona4.cpp:21:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   21 |         if (z=2) cout<<s2;
      |             ~^~
zona4.cpp:22:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   22 |         if (z=3) cout<<s3;
      |             ~^~
zona4.cpp:23:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   23 |         if (z=4) cout<<s4;
      |             ~^~

Cum funcționează evaluarea?