Compilare: user.cpp: In function ‘int main()’: user.cpp:68:14: warning: unused variable ‘s’ [-Wunused-variable] int l, c,s=0; ^ user.cpp:95:29: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l << ' ' << c << ' ' << mx << '\n'; ^ user.cpp:95:17: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << l << ' ' << c << ' ' << mx << '\n'; ^