Compilare: user.cpp: In function ‘int cautbin2(int, int, int)’: user.cpp:42:21: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] int mid = (from + mid) / 2; ~~~~~~^~~~~~ user.cpp: In function ‘int main()’: user.cpp:42:21: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] int mid = (from + mid) / 2; ~~~~~~^~~~~~ user.cpp:42:9: note: ‘mid’ was declared here int mid = (from + mid) / 2; ^~~