Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5:1: error: ‘ifstream’ was not declared in this scope ifstream in("cmmdc.in"); ^ user.cpp:5:1: note: suggested alternative: In file included from /usr/include/c++/5/ios:38:0, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/iosfwd:162:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:6:1: error: ‘ofstream’ was not declared in this scope ofstream out("cmmdc.out"); ^ user.cpp:6:1: note: suggested alternative: In file included from /usr/include/c++/5/ios:38:0, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/iosfwd:165:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:8:1: error: ‘in’ was not declared in this scope in>>a>>b; ^ user.cpp:14:1: error: ‘out’ was not declared in this scope out<<cmmdc; ^ user.cpp:16:2: error: ‘out’ was not declared in this scope out<<"0";} ^