Compilare: user.cpp: In function ‘int main()’: user.cpp:12: warning: unused variable ‘CURRENT’ user.cpp:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:11: warning: ‘closest’ may be used uninitialized in this function