Eroare de compilare: main.cpp: In function 'int main()': main.cpp:6:5: error: 'ofstream' was not declared in this scope ofstream f("copaci.out"); ^~~~~~~~ main.cpp:6:5: note: suggested alternative: In file included from /usr/include/c++/6/bits/localefwd.h:41:0, from /usr/include/c++/6/string:43, from /usr/include/c++/6/stdexcept:39, from /usr/include/c++/6/array:39, from /usr/include/c++/6/tuple:39, from /usr/include/c++/6/functional:55, from /usr/include/c++/6/thread:39, from main.cpp:1: /usr/include/c++/6/iosfwd:165:34: note: 'std::ofstream' typedef basic_ofstream<char> ofstream; ^~~~~~~~ main.cpp:7:5: error: 'f' was not declared in this scope f << n << std::endl; ^ Non zero exit status: 1