Compilare: user.cpp: In function ‘int main()’: user.cpp:98:13: warning: variable ‘osv’ set but not used [-Wunused-but-set-variable] int osv[n]; ^ user.cpp:84:29: warning: ‘index’ may be used uninitialized in this function [-Wmaybe-uninitialized] of << fields[index].range; ^