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How to read exactly one byte in a binary file in C++


How to read exactly one byte in a binary file in C++

By : user2951035
Date : November 17 2020, 11:58 AM
This might help you x is not initialized, and you modify only one byte of it, so you have garbage for the other bytes.
Use directly the correct type should solve your issue (and avoid a cast).
code :
char x;


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How to read a file byte by byte in Python and how to print a bytelist as a binary?

How to read a file byte by byte in Python and how to print a bytelist as a binary?


By : سميره محمد
Date : March 29 2020, 07:55 AM
will help you To answer the second part of your question, to convert to binary you can use a format string and the ord function:
code :
>>> byte = 'a'
>>> '{0:08b}'.format(ord(byte))
'01100001'
How to read binary file byte by byte using javascript?

How to read binary file byte by byte using javascript?


By : Sandeep
Date : March 29 2020, 07:55 AM
I wish this help you I need to read the binary file byte by byte using javascript.I had got below code in this site,but its not working.I think i have to add some extra src file as a reference to it.Please help me to do it.here the code... , You can read the file synchronously, byte by byte:
code :
fs.open('file.txt', 'r', function(err, fd) {
  if (err)
    throw err;
  var buffer = new Buffer(1);
  while (true)
  {   
    var num = fs.readSync(fd, buffer, 0, 1, null);
    if (num === 0)
      break;
    console.log('byte read', buffer[0]);
  }
});
Read binary file byte by byte

Read binary file byte by byte


By : Oliver Vega
Date : March 29 2020, 07:55 AM
like below fixes the issue As Adam says you must reopen the file. You might have noticed it wasn't reading if you'd checked the return value from read. You only need to read sizoef a bytes, but asking to read more is harmless. After you read b...
code :
cout << (int)b[0] << ' ' << ...
Read binary and txt File - 1 byte at a time

Read binary and txt File - 1 byte at a time


By : Pon
Date : March 29 2020, 07:55 AM
should help you out You need fseek(fp, 0, SEEK_SET); to reset the file pointer before the while loop.
How to read a binary file byte by byte?

How to read a binary file byte by byte?


By : IceU
Date : March 29 2020, 07:55 AM
Does that help You don't mention which version of Delphi you are using. If you are using a relatively new one, you can do as follows. If you get an error on the TBufferedFileStream, remove that line and uncomment the one with TFileStream.
code :
PROGRAM ByteReader;

{$APPTYPE CONSOLE}

USES SysUtils, Classes;

VAR
  S : TStream;
  O : Int64;
  B : BYTE;

BEGIN
  TRY
    // Open the file as a buffered file stream in Read/Only mode
    S:=TBufferedFileStream.Create(ParamStr(1),fmOpenRead);
    // If you get an error that TBufferedFileStream is unknown, use TFileStream instead.
    // It's compatible, but much slower
    // S:=TFileStream.Create(ParamStr(1),fmOpenRead);
    TRY
      // Reapeat for each byte (numbered 1 through the size (length) of the stream
      FOR O:=1 TO S.Size DO BEGIN
        // Read a single byte from the stream
        S.Read(B,SizeOf(BYTE));
        // Do whatever you want to do with it - here I am dumping it as a hex value
        WRITE(IntToHex(B))
      END
    FINALLY
      // Release the stream (and close the file)
      S.Free
    END
  EXCEPT
    ON E:Exception DO WRITELN(E.ClassName,': ',E.Message)
  END
END.
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