Compilare: user.cpp: In function ‘int lee1()’: user.cpp:72: warning: no return statement in function returning non-void user.cpp: In function ‘int lee2()’: user.cpp:99: warning: no return statement in function returning non-void user.cpp: In function ‘int lee3()’: user.cpp:131: warning: no return statement in function returning non-void user.cpp: In function ‘int lee4()’: user.cpp:163: warning: no return statement in function returning non-void