Compilare: user.cpp: In function ‘int sus1()’: user.cpp:19: warning: no return statement in function returning non-void user.cpp: In function ‘int stanga()’: user.cpp:27: warning: no return statement in function returning non-void user.cpp: In function ‘int rez()’: user.cpp:36: warning: no return statement in function returning non-void user.cpp: In function ‘int suma()’: user.cpp:45: warning: no return statement in function returning non-void