Eroare de compilare: main.cpp:19:13: error: variable 'std::ifstream cin' has initializer but incomplete type ifstream cin("strmatch.in"); ofstream cout("strmatch.out"); ^ main.cpp:19:43: error: variable 'std::ofstream cout' has initializer but incomplete type ifstream cin("strmatch.in"); ofstream cout("strmatch.out"); ^ main.cpp: In function 'int main()': main.cpp:28:2: error: reference to 'cin' is ambiguous cin >> a >> b; ^~~ main.cpp:19:10: note: candidates are: <typeprefixerror>cin ifstream cin("strmatch.in"); ofstream cout("strmatch.out"); ^~~ In file included from main.cpp:1:0: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= a.size(); i++) { ~~^~~~~~~~~~~ main.cpp:41:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= b.size(); i++) { ~~^~~~~~~~~~~ main.cpp:46:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < a.size()) { ~~^~~~~~~~~~ main.cpp:60:2: error: reference to 'cout' is ambiguous cout << cont << '\n'; ^~~~ main.cpp:19:39: note: candidates are: <typeprefixerror>cout ifstream cin("strmatch.in"); ofstream cout("strmatch.out"); ^~~~ In file included from main.cpp:1:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ main.cpp:62:3: error: reference to 'cout' is ambiguous cout << x << " "; ^~~~ main.cpp:19:39: note: candidates are: <typeprefixerror>cout ifstream cin("strmatch.in"); ofstream cout("strmatch.out"); ^~~~ In file included from main.cpp:1:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ main.cpp: At global scope: main.cpp:69:1: error: expected declaration before '}' token } ^ Non zero exit status: 1