Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream f("intrare.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream g("iesire.out"); ^ user.cpp: In function ‘void citire()’: user.cpp:6:2: error: ‘f’ was not declared in this scope {f>>k; ^ user.cpp: In function ‘int prog()’: user.cpp:25:1: error: ‘g’ was not declared in this scope g<<a-1; ^ user.cpp:26:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^