Compilare: user.cpp: In function ‘int main()’: user.cpp:34:11: warning: ‘beg’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<beg<<" "<<end<<" "; ^ user.cpp:34:21: warning: ‘end’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<beg<<" "<<end<<" "; ^