Re: Overwriting binary Files

[Mike Miller]

On Tue, Aug 16, 2016 at 06:40:24 -0700, Arym wrote:
> Hello everybody,
> 
> I have some binary files I would like to change, but the only thing I want
> to change is 1 byte out of 28k for instance.
> 
> pointer = ftell(openFile);
> oldValue = fread(openFile,1,'int16','ieee-le');
> newValue= 0x00FF ;
> fseek(openFile,pointer);
> fwrite(openFile,type);

Your example is confusing.

* You say you want to change one byte, but you are reading an int16,
  assigning the variable "newValue" as a double, then writing a uchar
* What does the name "type" refer to? Did you mean "newValue" instead?
* Is "openFile" an ordinary seekable file stream opened with mode "r+b"?

-- 
mike