Eroare de compilare: user.cpp:22:13: error: conflicting declaration ‘List* fin’ pnod start, fin; ^ user.cpp:8:10: error: ‘fin’ has a previous declaration as ‘std::ifstream fin’ ifstream fin("zlego.in"); ^ user.cpp: In function ‘int main()’: user.cpp:34:13: error: no match for ‘operator=’ (operand types are ‘std::ifstream {aka std::basic_ifstream<char>}’ and ‘pnod {aka List*}’) fin = start; ^ user.cpp:34:13: note: candidate is: In file included from user.cpp:1:0: /usr/include/c++/4.8/fstream:427:11: note: std::basic_ifstream<char>& std::basic_ifstream<char>::operator=(const std::basic_ifstream<char>&) <deleted> class basic_ifstream : public basic_istream<_CharT, _Traits> ^ /usr/include/c++/4.8/fstream:427:11: note: no known conversion for argument 1 from ‘pnod {aka List*}’ to ‘const std::basic_ifstream<char>&’ user.cpp:38:20: error: base operand of ‘->’ has non-pointer type ‘std::ifstream {aka std::basic_ifstream<char>}’ fin->leg = new Nod(i); ^ user.cpp:39:27: error: base operand of ‘->’ has non-pointer type ‘std::ifstream {aka std::basic_ifstream<char>}’ fin = fin -> leg; ^ user.cpp:28:24: warning: unused variable ‘elem’ [-Wunused-variable] long long T, n, i, elem; ^