Compilare: user.cpp: In function 'int main()': user.cpp:37: warning: unused variable '_p1' user.cpp:59: warning: unused variable '_p1' user.cpp:37: warning: '_p2' may be used uninitialized in this function user.cpp:19: warning: 'p2' may be used uninitialized in this function user.cpp:19: warning: 'p1' may be used uninitialized in this function user.cpp:59: warning: '_p2' may be used uninitialized in this function