Rezumat problemă

CatePare

#1261

Se citesc numere de la tastatură până la apariția lui zero. Să se determine câte dintre ele erau pare.

Consola Vilău Marian (marianvilau) Marian Vilau ușoară

Clasa 9 Elemente de baza ale limbajului Structuri repetitive Numărarea unor valori

Rezolvă

Detalii

Problema	CatePare	Operații I/O	tastatură/ecran
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64229477	Utilizator	Martinescu Nicusor (nicu_13)
Fișier	catepare.cpp	Dimensiune	172 B
Data încărcării	24 Aprilie 2026, 09:01	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

catepare.cpp: In function ‘int main()’:
catepare.cpp:7:14: error: no match for ‘operator&’ (operand types are ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} and ‘bool’)
    7 |     cin >> x & x<0
      |     ~~~~~~~~ ^ ~~~
      |         |       |
      |         |       bool
      |         std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
catepare.cpp:7:14: note: candidate: ‘operator&(int, int)’ (built-in)
    7 |     cin >> x & x<0
      |     ~~~~~~~~~^~~~~
catepare.cpp:7:14: 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/ios:44,
                 from /usr/include/c++/13/ostream:40,
                 from /usr/include/c++/13/iostream:41,
                 from catepare.cpp:1:
/usr/include/c++/13/bits/ios_base.h:83:3: note: candidate: ‘constexpr std::_Ios_Fmtflags std::operator&(_Ios_Fmtflags, _Ios_Fmtflags)’
   83 |   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
      |   ^~~~~~~~
/usr/include/c++/13/bits/ios_base.h:83:27: note:   no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} to ‘std::_Ios_Fmtflags’
   83 |   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
      |             ~~~~~~~~~~~~~~^~~
/usr/include/c++/13/bits/ios_base.h:126:3: note: candidate: ‘constexpr std::_Ios_Openmode std::operator&(_Ios_Openmode, _Ios_Openmode)’
  126 |   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
      |   ^~~~~~~~
/usr/include/c++/13/bits/ios_base.h:126:27: note:   no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} to ‘std::_Ios_Openmode’
  126 |   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
      |             ~~~~~~~~~~~~~~^~~
/usr/include/c++/13/bits/ios_base.h:166:3: note: candidate: ‘constexpr std::_Ios_Iostate std::operator&(_Ios_Iostate, _Ios_Iostate)’
  166 |   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
      |   ^~~~~~~~
/usr/include/c++/13/bits/ios_base.h:166:26: note:   no known conversion for argument 1 from ‘std::basic_istream<char>::__istream_type’ {aka ‘std::basic_istream<char>’} to ‘std::_Ios_Iostate’
  166 |   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
      |             ~~~~~~~~~~~~~^~~
catepare.cpp:7:17: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses]
    7 |     cin >> x & x<0
      |                ~^~
catepare.cpp:14:2: error: expected ‘}’ at end of input
   14 | }
      |  ^
catepare.cpp:4:12: note: to match this ‘{’
    4 | int main() {
      |            ^
catepare.cpp:5:12: warning: unused variable ‘k’ [-Wunused-variable]
    5 |     int x, k = 0;
      |            ^

Cum funcționează evaluarea?