[C++]Storing 2d char array to file and load it. How?

[Armandur]

How would I store a 2d array in c++ and also load one?

[Jallen]

[url]http://www.cplusplus.com/reference/iostream/fstream/[/url]

Just make your own binary format that outlines the dimensions of the array then stores it linearly as a series of values.

[Darwin226]

And what's with all the one question threads lately?
The "What do you need help with?" thread is there for a reason

[20k]

[QUOTE=Jallen;25512474][url]http://www.cplusplus.com/reference/iostream/fstream/[/url]

Just make your own binary format that outlines the dimensions of the array then stores it linearly as a series of values.[/QUOTE]

Would it not be easier to store say, 4 numbers that are the length of the array, then straight out fprintf it? Or are we going with C++ streams etc?

[efeX]

[QUOTE=Darwin226;25512498]And what's with all the one question threads lately?
The "What do you need help with?" thread is there for a reason[/QUOTE]

this this and this

[Videvik]

-snip-

rate box

[Armandur]

[QUOTE=Darwin226;25512498]And what's with all the one question threads lately?
The "What do you need help with?" thread is there for a reason[/QUOTE]

Sorry, didn't see that one :(

[Jallen]

[QUOTE=Icedshot;25512579]Would it not be easier to store say, 4 numbers that are the length of the array, then straight out fprintf it? Or are we going with C++ streams etc?[/QUOTE]

Well the thread is about C++, so I advised on C++, not C.
Also it's not in any way easier to use fprintf.
And AFAIK fprintf is used for text, which would be a pretty bad idea to use for this. A binary file would be better.
Also I fail to see how you need 4 numbers to signify the length of the array.

Doing it my way you only need 2 integers to signify the width and the height.
(width)(height)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)etc.
Then when parsing you simply read the first 2 ints, make a 2d array of that size and do a for loop with a nested for loop to populate it.

[20k]

[QUOTE=Jallen;25513397]Well the thread is about C++, so I advised on C++, not C.
Also it's not in any way easier to use fprintf.
And AFAIK fprintf is used for text, which would be a pretty bad idea to use for this. A binary file would be better.
Also I fail to see how you need 4 numbers to signify the length of the array.

Doing it my way you only need 2 integers to signify the width and the height.
(width)(height)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)(data)etc.
Then when parsing you simply read the first 2 ints, make a 2d array of that size and do a for loop with a nested for loop to populate it.[/QUOTE]

You're right actually, storing it binary information would make a lot more sense. The thinking behind the 4 numbers was that it would be stored as 4 characters in the file, which would represent a maximum length of the array (so 9999). As a binary file though, you dont need to faff about :3

[Quarternions]

[QUOTE=efeX;25512595]this this and this[/QUOTE]

Hmm I think we should revert to question threads because the what do you need help section doesn't get as much interest as individual threads.