Compilare: user.cpp: In function ‘int main()’: user.cpp:33:11: warning: ‘beg’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<beg<<" "<<end<<" "; ^ user.cpp:23:8: warning: ‘end’ may be used uninitialized in this function [-Wmaybe-uninitialized] S2[end+1]=0; ^