Eroare de compilare: user.cpp:4:11: error: ‘::main’ must return ‘int’ void main() ^ user.cpp: In function ‘int main()’: user.cpp:7:5: error: ‘ifstream’ was not declared in this scope ifstream f("cautbin.in"); ^ user.cpp:7:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/iosfwd:157:34: note: ‘std::ifstream’ typedef basic_ifstream<char> ifstream; ^ user.cpp:7:14: error: expected ‘;’ before ‘f’ ifstream f("cautbin.in"); ^ user.cpp:8:5: error: ‘ofstream’ was not declared in this scope ofstream g("cautbin.out"); ^ user.cpp:8:5: note: suggested alternative: In file included from /usr/include/c++/4.8/ios:38:0, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/iosfwd:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:8:14: error: expected ‘;’ before ‘g’ ofstream g("cautbin.out"); ^ user.cpp:9:5: error: ‘f’ was not declared in this scope f>>n; ^ user.cpp:47:21: error: ‘g’ was not declared in this scope g<<m-1<<endl; ^ user.cpp:47:29: error: ‘endl’ was not declared in this scope g<<m-1<<endl; ^ user.cpp:47:29: note: suggested alternative: In file included from /usr/include/c++/4.8/iostream:39:0, from user.cpp:1: /usr/include/c++/4.8/ostream:564:5: note: ‘std::endl’ endl(basic_ostream<_CharT, _Traits>& __os) ^ user.cpp:50:21: error: ‘g’ was not declared in this scope g<<-1<<endl; ^