Compilare: user.cpp: In function ‘int main()’: user.cpp:38:10: warning: ‘code’ may be used uninitialized in this function [-Wmaybe-uninitialized] char code; ^ user.cpp:65:27: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l << " " << c << '\n' << code; ^ user.cpp:65:15: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l << " " << c << '\n' << code; ^