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Resizing a binary file?
Author
Let's say I have a binary file of 3 integers:
It pretty much goes like this:
1. Open the file for read access
2. Read file contents
3. Close the file
4. Process file contents (resizing if necessary)
5. Open the file for write access (over-writing the contents of the previous file if it exists, which in this case it does)
6. Write out the processed contents.
7. Close the file.
C Code might look like this (error checking omitted for brevity):
1. Open the file for read access
2. Read file contents
3. Close the file
4. Process file contents (resizing if necessary)
5. Open the file for write access (over-writing the contents of the previous file if it exists, which in this case it does)
6. Write out the processed contents.
7. Close the file.
C Code might look like this (error checking omitted for brevity):
FILE* fp = fopen("filename","rb");int nums[3];fread(nums,sizeof(int),3,fp);fclose(fp);// don't need to modify the array, but only write out the first two intsfp = fopen("filename","wb");fwrite(nums,sizeof(int),2,fp);fclose(fp);
Author
While that is a possible solution, the problem is that the file could have 100000 integers.
Another solution would be to create a temporary file, but I wanted to know if there was another way.
Another solution would be to create a temporary file, but I wanted to know if there was another way.
There is: SetEndOfFile (). ^_^
To daerid: lol[lol], your solution makes me laugh. Indeed, if I were the first poster, I did that as well.
To daerid: lol[lol], your solution makes me laugh. Indeed, if I were the first poster, I did that as well.
Author
Oh my God! Thankyou!
Ratings given to the both of you (since my original post wasn't very clear).
Ratings given to the both of you (since my original post wasn't very clear).
This topic is closed to new replies.
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