Compilare: user.cpp: In function ‘int actual()’: user.cpp:17:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int afis()’: user.cpp:25:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int col()’: user.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int lin()’: user.cpp:51:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int both()’: user.cpp:82:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^