Eroare de compilare: main.cpp: In function 'int main()': main.cpp:20:10: error: no match for 'operator>>' (operand types are 'std::ofstream' {aka 'std::basic_ofstream<char>'} and 'int') 20 | fout >> 20; | ~~~~ ^~ ~~ | | | | | int | std::ofstream {aka std::basic_ofstream<char>} main.cpp:20:10: note: candidate: 'operator>>(int, int)' (built-in) 20 | fout >> 20; | ~~~~~^~~~~ main.cpp:20:10: note: no known conversion for argument 1 from 'std::ofstream' {aka 'std::basic_ofstream<char>'} to 'int' In file included from /usr/include/c++/12.2.1/string:54, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: /usr/include/c++/12.2.1/bits/basic_string.tcc:940:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)' 940 | operator>>(basic_istream<_CharT, _Traits>& __in, | ^~~~~~~~ /usr/include/c++/12.2.1/bits/basic_string.tcc:940:5: note: template argument deduction/substitution failed: main.cpp:20:13: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>' 20 | fout >> 20; | ^~ In file included from /usr/include/c++/12.2.1/istream:1016: /usr/include/c++/12.2.1/bits/istream.tcc:960:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)' 960 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | ^~~~~~~~ /usr/include/c++/12.2.1/bits/istream.tcc:960:5: note: template argument deduction/substitution failed: main.cpp:20:13: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<_CharT, _Traits>' 20 | fout >> 20; | ^~ /usr/include/c++/12.2.1/istream:756:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)' 756 | operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) | ^~~~~~~~ /usr/include/c++/12.2.1/istream:756:5: note: template argument deduction/substitution failed: main.cpp:20:13: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<char, _Traits>' 20 | fout >> 20; | ^~ /usr/include/c++/12.2.1/istream:761:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)' 761 | operator>>(basic_istream<char, _Traits>& __in, signed char& __c) | ^~~~~~~~ /usr/include/c++/12.2.1/istream:761:5: note: template argument deduction/substitution failed: main.cpp:20:13: note: 'std::ofstream' {aka 'std::basic_ofstream<char>'} is not derived from 'std::basic_istream<char, _Traits>' 20 | fout >> 20; | ^~ /usr/include/c++/12.2.1/istream:859:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Num> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT (&)[_Num])' 859 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT (&__s)[_Num]) | ^~~~~~~~ Non zero exit status: 1