C++ File I/O???

[<ABX]

How much faster is c++ file I/O than VB's?

Would it make a program alot faster if i wrote a dll file in c++ to read a file into array so that vb can access it. If it is faster is there a tutorial that would help me learn how to do this. or could some one post a example?

Thanx <ABX!

[Zaei]

You shouldnt be reading or writing to a file very often (unless you are writing some sort of specialized database), so the speed really doesnt matter. In reality, both are calling the Win API, so the speed difference is negligable.

Z.

[<ABX]

How about Reading a 200kb text file into a array

I thought c++ was suspose to be alot faster for file access?

[<ABX]

I Guess C++ Forums not as busy as vb???

[parksie]

Originally posted by &lt;ABX
How about Reading a 200kb text file into a array

I thought c++ was suspose to be alot faster for file access?

It's faster for the actual processing on that data, in most cases.

I wouldn't worry about it.

[jim mcnamara]

I/O speeds are related far more to hardware than the language.
A disk with high latency, slow rotation, and lots of fragmentation is far more of a problem.

CPU and primary bus throughput speeds (software) are usually 100 - 1000 times faster than disk i/o. This is why most disks have 1-10MB+ of onboard cache. It's essentially a readahead buffer. If you want to maximize the use of the cache read the entire file at once then close it. This is only going to help with large files. This is because Windows has a RAM cache of usually 64kb for all open files. This will handle little files - the disk cache is meant for biggies.

VB code (sorry not C++)

dim tmp() as string
dim a as string
open "myfile.txt" for binary as #1
a= space(LOF(1))
get #1,,a
close #1
tmp=split(a,VbCrLf)