Borderou de evaluare (job #702971)

Eroare de compilare: main.cpp: In function 'int main()': main.cpp:17:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 17 | if(a = 1) | ~~^~~ main.cpp:19:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 19 | if(a = 2) | ~~^~~ main.cpp:21:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 21 | if(a = 3) | ~~^~~ main.cpp:24:10: error: no match for 'operator<<' (operand types are 'std::ifstream' {aka 'std::basic_ifstream<char>'} and 'int') 24 | fout << nr << '\n'; | ~~~~ ^~ ~~ | | | | | int | std::ifstream {aka std::basic_ifstream<char>} main.cpp:24:10: note: candidate: 'operator<<(int, int)' (built-in) 24 | fout << nr << '\n'; | ~~~~~^~~~~ main.cpp:24:10: note: no known conversion for argument 1 from 'std::ifstream' {aka 'std::basic_ifstream<char>'} to 'int' In file included from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/string:55, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/bits/locale_classes.h:40, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/bits/ios_base.h:41, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/ios:42, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/ostream:38, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/iostream:39, from main.cpp:1: /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/bits/basic_string.h:6531:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)' 6531 | operator<<(basic_ostream<_CharT, _Traits>& __os, | ^~~~~~~~ /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/bits/basic_string.h:6531:5: note: template argument deduction/substitution failed: main.cpp:24:13: note: 'std::ifstream' {aka 'std::basic_ifstream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>' 24 | fout << nr << '\n'; | ^~ In file included from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/bits/ios_base.h:46, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/ios:42, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/ostream:38, from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/iostream:39, from main.cpp:1: /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/system_error:279:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)' 279 | operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e) | ^~~~~~~~ /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/system_error:279:5: note: template argument deduction/substitution failed: main.cpp:24:13: note: 'std::ifstream' {aka 'std::basic_ifstream<char>'} is not derived from 'std::basic_ostream<_CharT, _Traits>' 24 | fout << nr << '\n'; | ^~ In file included from /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/iostream:39, from main.cpp:1: /usr/lib/gcc/i686-pc-linux-gnu/11/include/g++-v11/ostream:513:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)' 513 | operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)