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Binary-Access Data Types

Started by Gaiiden Oct 10, 2000 at 6:07 PM 3 replies 650+ views

Original Post

Oct 10, 2000 at 6:07 PM

hey, I''m exploring Binary Access with files, I found an article here on GameDev. I''m just wondering - when you read the data in, what to you put it in? My coworker was thinking of using a char array, but I''m not too sure that will work. I was thinking of using the BYTE data type. Can anyone give some help? Thanks. ============================== \\// live long and prosper; \||/ die short and rot. ==============================

djsteffey

Oct 10, 2000 at 10:17 PM

you use binary files like this

    
ofstream out;
out.open("filename", ios::binary); // i think that is the right

int x = 5;
out.write((char*)&x, sizeof(int));
out.close();


// now to read it in

ifstream in;
in.open("filename", ios::binary);
int x;
in.read((char*)&x, sizeof(int));
in.close();

now x will be equal to 5
you can replace the int with any data type you want
it could even be a struct that you create

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Shannon Barber

Oct 10, 2000 at 10:20 PM

did you say coworker?

a BYTE is an unsigned char

sometimes you use void*, sometimes char* or BYTE*, you need to know how to cast.

Muzzafarath

Oct 11, 2000 at 8:15 AM

quote:
Original post by Gaiiden

when you read the data in, what to you put it in?

You can put it in whatever you like - a float, an int, a struct, whatever.

Gaiiden

Oct 12, 2000 at 6:56 AM

cool. Thanks guys. makes my life easier....

==============================
\\// live long and prosper; \||/ die short and rot.
==============================

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