Eroare de compilare: main.cpp:3:13: error: variable 'std::ifstream cin' has initializer but incomplete type 3 | ifstream cin("fractii.in"); | ^ main.cpp:4:14: error: variable 'std::ofstream cout' has initializer but incomplete type 4 | ofstream cout("fractii.out"); | ^ main.cpp: In function 'int main()': main.cpp:25:5: error: reference to 'cin' is ambiguous 25 | cin>>n; | ^~~ In file included from main.cpp:1: /usr/include/c++/10/iostream:60:18: note: candidates are: 'std::istream std::cin' 60 | extern istream cin; /// Linked to standard input | ^~~ main.cpp:3:10: note: '<typeprefixerror>cin' 3 | ifstream cin("fractii.in"); | ^~~ main.cpp:32:5: error: reference to 'cout' is ambiguous 32 | cout<<2*nr+1; | ^~~~ In file included from main.cpp:1: /usr/include/c++/10/iostream:61:18: note: candidates are: 'std::ostream std::cout' 61 | extern ostream cout; /// Linked to standard output | ^~~~ main.cpp:4:10: note: '<typeprefixerror>cout' 4 | ofstream cout("fractii.out"); | ^~~~ main.cpp:33:5: error: reference to 'cin' is ambiguous 33 | cin.close(); | ^~~ In file included from main.cpp:1: /usr/include/c++/10/iostream:60:18: note: candidates are: 'std::istream std::cin' 60 | extern istream cin; /// Linked to standard input | ^~~ main.cpp:3:10: note: '<typeprefixerror>cin' 3 | ifstream cin("fractii.in"); | ^~~ main.cpp:34:5: error: reference to 'cout' is ambiguous 34 | cout.close(); | ^~~~ In file included from main.cpp:1: /usr/include/c++/10/iostream:61:18: note: candidates are: 'std::ostream std::cout' 61 | extern ostream cout; /// Linked to standard output | ^~~~ main.cpp:4:10: note: '<typeprefixerror>cout' 4 | ofstream cout("fractii.out"); | ^~~~ main.cpp:26:9: warning: unused variable 's' [-Wunused-variable] 26 | int s=n,nr=n-1; | ^ Non zero exit status: 1