[Mingw-users] how to use the read/write

["yu jie" <yujie052@xxxxxxxxx>]

Hi, all:
The size of a.pdf is about 24M. I get weird result from the following
code, the read function in while condition only returns twice. 

#include <stdio.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
int main()
{
        int fd, i = 0;
        ssize_t ret;
        char buffer[4*1024];
        fd = open("d:/a.pdf", O_RDONLY);
        if (fd < 0) {
                printf("can't open\n");
                return 0;
        }
        while ((ret = read(fd, buffer, 4*1024)) > 0) {
                printf("%d, %d\n", ret, ++i);
        }
        close(fd);
        return 0;
}


Best wishes.
                                                                                                     
                                                                                              Kevin
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