How to read 4GB file on 32bit system

Question

In my case I have different files lets assume that I have >4GB file with data. I want to read that file line by line and process each line. One of my restrictions is that so

Answer 1

Since this is windows, you can use the native windows file functions with the "ex" suffix:

windows file management functions

specifically the functions like GetFileSizeEx(), SetFilePointerEx(), ... . Read and write functions are limited to 32 bit byte counts, and the read and write "ex" functions are for asynchronous I/O as opposed to handling large files.