How to write data to a .txt file by c++?

Development Programming & Scripting
1

I apologize if my question is too stupid,okay.As what I said,I created a pawn in UE4,I want to output its position every frame.I tried to use FFileHepler::SaveStringtoFile().But it only save the position in the last frame?How gotta i solve it?

2

WriteFlags = 8

3

As I know, there’s a virtual function named Tick, it will execute erery frame.

If you write your logic in it, it may work.

But if you put a I/O operation in Tick function, your application will not have a good performance.

4

Thank you for your answer,It works

5

emmmm,I tried to do like you said,My function is in the Tick().It only save the position of the last frame,the previous data will be covered.

6

I’m glad to hear that you’ve solve your problem. I found some info in FileManager.h

enum EFileWrite
{
	FILEWRITE_None				= 0x00,
	FILEWRITE_NoFail            = 0x01,
	FILEWRITE_NoReplaceExisting = 0x02,
	FILEWRITE_EvenIfReadOnly    = 0x04,
	FILEWRITE_Append			= 0x08,
	FILEWRITE_AllowRead			= 0x10,
	FILEWRITE_Silent			= 0x20
};

It maybe the reason of why “code 8” is the right way.