Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5:2: error: ‘ifstream’ was not declared in this scope ifstream cin("tabela.in") ^ user.cpp:5:2: 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/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/4.8/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:5:11: error: expected ‘;’ before ‘cin’ ifstream cin("tabela.in") ^ user.cpp:7:3: error: ‘cin’ was not declared in this scope cin>>a>>b; ^ user.cpp:7:3: note: suggested alternative: In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0, from user.cpp:1: /usr/include/c++/4.8/iostream:60:18: note: ‘std::cin’ extern istream cin; /// Linked to standard input ^ user.cpp:8:3: error: ‘cout’ was not declared in this scope cout<<(a-1)^(b-1); ^ user.cpp:8:3: note: suggested alternative: In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0, from user.cpp:1: /usr/include/c++/4.8/iostream:61:18: note: ‘std::cout’ extern ostream cout; /// Linked to standard output ^