Writing structure to file? - GameCreators Forum

Author

Message

Murloc

15

Years of Service

User Offline

Joined: 28th Dec 2008

Location: Utena,Lithuania

Posted: 11th Apr 2009 00:15

Link

At the moment I have such a problem, I want to write contents of struct to a file, got read some topics covering this in the internet(google) but still it makes some troubles.

What I'm doing:

Implementing my struct:

+ Code Snippet

struct MyStruct
{
int testint;
float testfloat;
};

Adding a child one,assigning values:

+ Code Snippet

MyStruct myStruct;
myStruct.testint=123;
myStruct.testfloat=1.23f;

Opening a filestream,file,writing,closing:

+ Code Snippet

std::ofstream writemystruct;
writemystruct.open("testfile.txt");
writemystruct.write((char*)&myStruct,sizeof(myStruct));
writemystruct.close();

But what I get in file is not what I want. Some variety of symbols.

So I am asking for assistance in this, how to write contents of the struct in file?

Theory-When you know everything,but nothing works.
Practice-When everything works,but you don't know why.
Programming merges these two-Nothing works,and you don't know why.

Back to top

Profile PM

Diggsey

18

Years of Service

User Offline

Joined: 24th Apr 2006

Location: On this web page.

Posted: 11th Apr 2009 00:39

Link

@Murloc
When written to a file, that struct WILL look like a variety of symbols, and without converting and saving each member individually, that's all you're going to get.

[b]Yuor signutare was aresed by a deslyxic mud...
BOX2D V2 HAS HELP FILES! AND A WIKI!

Back to top

Profile PM Email Website

Murloc

15

Years of Service

User Offline

Joined: 28th Dec 2008

Location: Utena,Lithuania

Posted: 11th Apr 2009 00:46

Link

Ohh... Damn I wasn't notified about this

So it should be possible to read it back like so too?

Theory-When you know everything,but nothing works.
Practice-When everything works,but you don't know why.
Programming merges these two-Nothing works,and you don't know why.

Back to top

Profile PM

Murloc

15

Years of Service

User Offline

Joined: 28th Dec 2008

Location: Utena,Lithuania

Posted: 11th Apr 2009 00:54 Edited at: 11th Apr 2009 00:55

Link

Ohh I managed to read it back, sweet! Kinda encrypt for free

No further help needed.

Theory-When you know everything,but nothing works.
Practice-When everything works,but you don't know why.
Programming merges these two-Nothing works,and you don't know why.

Back to top

Profile PM

AlexI

19

Years of Service

User Offline

Joined: 31st Dec 2004

Location: UK

Posted: 11th Apr 2009 01:30 Edited at: 11th Apr 2009 01:31

Link

Quote: "Kinda encrypt for free"

Someone else could just right a program and load your structure to