copying the contents of a binary file

Posted by Ganesh on Stack Overflow See other posts from Stack Overflow or by Ganesh
Published on 2010-05-03T12:00:20Z Indexed on 2010/05/03 18:58 UTC
Read the original article Hit count: 175

Filed under:

coping

I am designing an image decoder and as a first step I tried to just copy the using c. i.e open the file, and write its contents to a new file. Below is the code that I used.

while((c=getc(fp))!=EOF)
  fprintf(fp1,"%c",c);

where fp is the source file and fp1 is the destination file. The program executes without any error, but the image file(".bmp") is not properly copied. I have observed that the size of the copied file is less and only 20% of the image is visible, all else is black. When I tried with simple text files, the copy was complete.

Do you know what the problem is?

Related posts about filehandle

Determine how much can I write into a filehandle

as seen on Stack Overflow - Search for 'Stack Overflow'
How to determine if I can write the given number of bytes to a filehandle (socket actually)? (Alternatively, how to "unread" the data I had read from other filehandle?) I want something like: n = how_much_can_I_write(w_handle); n = read(r_handle, buf, n); assert(n==write(w_handle, buf, n)); Both… >>> More
JNI issue: symbol lookup error by FileHandle in C++ DLL

as seen on Stack Overflow - Search for 'Stack Overflow'
I made JNI functions and linked them with the c++ dynamic library successfully. I got all of them working just fine, but I had an issue for one function, I got symbol lookup error from the FileHandle class that I used in the c++ that I use to read data from file. Knowing that it's working on a normal… >>> More
Error Copying Source File in Audio Spectrum Visualizer [closed]

as seen on Programmers - Search for 'Programmers'
I'm testing this code using LibGDX, Java, and Eclipse to test the music player that detects the frequency. I saw this one on this website plus the link on GitHub: http://gtomee.com/2012/07/28/audio-spectrum-visualizer-with-libgdx/ It works when running on desktop project folder but not on Android… >>> More
When does ref($variable) return 'IO'?

as seen on Stack Overflow - Search for 'Stack Overflow'
Here's the relevant excerpt from the documentation of the ref function: The value returned depends on the type of thing the reference is a reference to. Builtin types include: SCALAR ARRAY HASH CODE REF GLOB LVALUE FORMAT IO VSTRING Regexp Based on this, I imagined that calling ref on a… >>> More
Directing stdout of system command in Perl to filehandle

as seen on Stack Overflow - Search for 'Stack Overflow'
With the open command in Perl, you can use a filehandle. However I have trouble getting back the exit code with the open command in Perl. With the system command in Perl, I can get back the exit code of the program I'm running. However I want to just redirect the STDOUT to some filehandle (no stderr)… >>> More

Developer IT