Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream f("sate.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream g("sate.out"); ^ user.cpp: In function ‘int main()’: user.cpp:11:1: error: ‘f’ was not declared in this scope f>>n>>m>>x>>y; ^ user.cpp:19:1: error: ‘ifstream’ was not declared in this scope ifstream f("sate.in"); ^ user.cpp:19:1: 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:19:10: error: expected ‘;’ before ‘f’ ifstream f("sate.in"); ^ user.cpp:74:1: error: ‘g’ was not declared in this scope g<<c[1][u]; ^