Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5:5: error: ‘ifstream’ was not declared in this scope ifstream f("paralelogram2.in"); ^ user.cpp:5:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:5:14: error: expected ‘;’ before ‘f’ ifstream f("paralelogram2.in"); ^ user.cpp:6:5: error: ‘ofstream’ was not declared in this scope ofstream g("paralelogram2.out"); ^ user.cpp:6:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/iosfwd:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:6:14: error: expected ‘;’ before ‘g’ ofstream g("paralelogram2.out"); ^ user.cpp:11:5: error: ‘f’ was not declared in this scope f >> T; ^ user.cpp:20:17: error: ‘g’ was not declared in this scope g << x; ^ user.cpp:26:17: error: ‘g’ was not declared in this scope g << y << ' '; ^ user.cpp:35:17: error: ‘g’ was not declared in this scope g << x << ' '; ^ user.cpp:37:17: error: ‘g’ was not declared in this scope g << y << ' '; ^