Compilare: user.cpp:23:33: warning: multi-character character constant [-Wmultichar] if(s == 0) g << "NU" << '/n'; ^ user.cpp:24:27: warning: multi-character character constant [-Wmultichar] else g << "DA" << '/n'; ^ user.cpp: In function ‘int main()’: user.cpp:16:9: warning: ‘n’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int j = 1; j <= n; j++) ^