Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5:4: error: ‘ifstream’ was not declared in this scope ifstream in("adunare.in"); ^ user.cpp:5:4: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/ios:38:0, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:5:13: error: expected ‘;’ before ‘in’ ifstream in("adunare.in"); ^ user.cpp:6:5: error: ‘ofstream’ was not declared in this scope ofstream out("adunare.out"); ^ user.cpp:6:5: note: suggested alternative: In file included from /usr/local/include/c++/4.8.0/ios:38:0, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/iosfwd:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:6:14: error: expected ‘;’ before ‘out’ ofstream out("adunare.out"); ^ user.cpp:7:5: error: ‘in’ was not declared in this scope in>>a>>b; ^ user.cpp:8:5: error: ‘out’ was not declared in this scope out<<a+b; ^