Compilare: user.cpp:51:24: warning: multi-character character constant [-Wmultichar] ant[i]='-1'; ^ user.cpp:70:24: warning: multi-character character constant [-Wmultichar] urm[i]='-1'; ^ user.cpp:92:15: warning: multi-character character constant [-Wmultichar] ant[i]='-1'; ^ user.cpp: In function ‘int main()’: user.cpp:51:23: warning: overflow in implicit constant conversion [-Woverflow] ant[i]='-1'; ^ user.cpp:70:23: warning: overflow in implicit constant conversion [-Woverflow] urm[i]='-1'; ^ user.cpp:92:14: warning: overflow in implicit constant conversion [-Woverflow] ant[i]='-1'; ^