Garbage values in File
Hello..
I'm creating a text file in C. I'm able to read and write into it correctly. However, when i open the file in Notepad or in command prompt edit, it shows garbage values.
What is the reason for this? And is there a way to read the contents of the file without my program ?
If this mite be a reason..I'm writing records as structures into the file using fwrite..
Thanks..
If you write a structure, you have to be careful. The data will be written as binary, so you have to open the file as binary. Also, writing pointers to files make no sense. Finally, integers are written in binary. That is, the integer 267 may be written to the file as 4 bytes: "\x02\x01\x00\x00". Those bytes won't be human readable. If you want "267" written to the file, you'll have to convert it yourself to a string and write that to a file.
Really, you don't seem to be understanding how data is stored and/or written to a file. I suggest you don't directly write a structure to a file. First of all it's not portable; second of all you'll need to be able to understand what it does before you use it, which apparently you don't.
Just convert the structure to a string that you want, then write it to a file. When reading from the file in your program, convert it back to the structure manually.
Ha, I just posted an example of writing plain text to file here which might be helpful:
FILE and strtok problems (C Linux)
Last edited by HowardL; 04-11-2010 at 09:24 AM.
thanks..i'll consider what u say but as of now i'm short of time..
its like im creating a student database. i accept the name,roll no.,marks etc as the variables in the structure and then write the whole structure to the file..
what is the alternate way to do this?
As in how else can i write it such that it is in human legible text form..?
Last edited by wayne08; 04-11-2010 at 09:28 AM.
Use fprintf() to write out each of the struct members to the file.
cool..i'll try..thanks..
Last edited by wayne08; 04-11-2010 at 11:05 AM.
