Compilare: user.cpp: In function ‘bool valid(int, int)’: user.cpp:12:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘int main()’: user.cpp:46:12: warning: unused variable ‘i’ [-Wunused-variable] int T, i; ^ user.cpp: In function ‘long int binary_s()’: user.cpp:41:12: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] return rez; ^