Eroare de compilare: main.cpp: In function 'int main()': main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < lines.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:36:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ind = 0; ind < min(lines[i].size(), lines[0].size()); ind++) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int lineIndex = 0; lineIndex < lines.size(); lineIndex++) ~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:56:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int wordIndex = 0; wordIndex < min(lines[0].size(), line.size()); wordIndex++) ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:64:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int ind = 0; ind < min(lines[highest].size(), lines[0].size()); ind++) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:91:14: error: no match for 'operator<<' (operand types are 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' and 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}') cout << out << " "; ^ In file included from /usr/include/c++/6/regex:62:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:110, from main.cpp:1: /usr/include/c++/6/bits/regex.h:1483:5: note: candidate: template<class _Ch_type, class _Ch_traits, class _Bi_iter> std::basic_ostream<_CharT, _Traits>& std::__cxx11::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::sub_match<_Bi_iter>&) operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os, ^~~~~~~~ /usr/include/c++/6/bits/regex.h:1483:5: note: template argument deduction/substitution failed: main.cpp:91:17: note: 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>' cout << out << " "; ^~~ In file included from /usr/include/c++/6/random:51:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:108, from main.cpp:1: /usr/include/c++/6/bits/random.tcc:3160:5: note: candidate: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::piecewise_linear_distribution<_RealType>&) operator<<(std::basic_ostream<_CharT, _Traits>& __os, ^~~~~~~~ /usr/include/c++/6/bits/random.tcc:3160:5: note: template argument deduction/substitution failed: main.cpp:91:17: note: 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>' cout << out << " "; ^~~ In file included from /usr/include/c++/6/random:51:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:108, from main.cpp:1: /usr/include/c++/6/bits/random.tcc:2944:5: note: candidate: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::piecewise_constant_distribution<_RealType>&) operator<<(std::basic_ostream<_CharT, _Traits>& __os, ^~~~~~~~ /usr/include/c++/6/bits/random.tcc:2944:5: note: template argument deduction/substitution failed: main.cpp:91:17: note: 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>' cout << out << " "; ^~~ In file included from /usr/include/c++/6/random:51:0, Non zero exit status: 1