public static Nullable<int> TrackAltitude(
	Nullable<int> altitude
)

Public Shared Function TrackAltitude ( 
	altitude As Nullable(Of Integer)
) As Nullable(Of Integer)

public:
static Nullable<int> TrackAltitude(
	Nullable<int> altitude
)

static member TrackAltitude : 
        altitude : Nullable<int> -> Nullable<int>