Eroare de compilare: user.cpp: In function ‘void sol()’: user.cpp:13:2: error: ‘cout’ was not declared in this scope cout << "1 1\n" << "1\n"; ^ user.cpp:13:2: 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 ^ user.cpp:7:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:18:2: error: ‘ifstream’ was not declared in this scope ifstream cin("nop.in"); ^ user.cpp:18:2: 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:18:11: error: expected ‘;’ before ‘cin’ ifstream cin("nop.in"); ^ user.cpp:19:2: error: ‘ofstream’ was not declared in this scope ofstream cout("nop.out"); ^ user.cpp:19:2: 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:160:34: note: ‘std::ofstream’ typedef basic_ofstream<char> ofstream; ^ user.cpp:19:11: error: expected ‘;’ before ‘cout’ ofstream cout("nop.out"); ^ user.cpp:21:5: error: ‘cin’ was not declared in this scope cin >> t;