Template Function

Result

Item.h

UCLASS()
class ***_API AItem : public AActor
{
	GENERATED_BODY()
	
public:	
	AItem();

protected:
	virtual void BeginPlay() override;

	template<typename T>
	T Avg(T First, T Second);
};
 
template<typename T>
inline T AItem::Avg(T First, T Second)
{
	return (First + Second) / 2;
}

Item.cpp

void AItem::BeginPlay()
{
	Super::BeginPlay();

	int32 AvgInt = Avg<int32>(3, 5);
	UE_LOG(LogTemp, Warning, TEXT("Avg 3 and 5 : %d"), AvgInt);

	float AvgFloat = Avg<float>(3.15f, 5.234f);
	UE_LOG(LogTemp, Warning, TEXT("Avg 3.15 and 5.234 : %f"), AvgFloat);

	FVector AvgVector = Avg<FVector>(GetActorLocation(), FVector::ZeroVector);
	DRAW_POINT_SingleFrame(AvgVector);
}