Eroare de compilare: user.cpp:1:1: error: ‘ifstream’ does not name a type ifstream f("magicmatrix.in"); ^ user.cpp:2:1: error: ‘ofstream’ does not name a type ofstream g("magicmatrix.out"); ^ user.cpp: In function ‘int main()’: user.cpp:12:5: error: ‘f’ was not declared in this scope f >> T; ^ user.cpp:29:13: error: ‘g’ was not declared in this scope g << "YES" << '\n'; ^ user.cpp:31:13: error: ‘g’ was not declared in this scope g << "NO" << '\n'; ^