Compilare: user.cpp: In function ‘int main()’: user.cpp:33:28: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<mx<<" "<<a<<" "<<b; ^ user.cpp:33:19: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<mx<<" "<<a<<" "<<b; ^