Compilare: user.cpp: In function ‘int main()’: user.cpp:80:30: warning: ‘s2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << s1 << ' ' << s2 << '\n'; ^ user.cpp:80:17: warning: ‘s1’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << s1 << ' ' << s2 << '\n'; ^