函数名: read
功 能: 从文件中读
用 法: int read(int handle, void *buf, int nbyte);
程序例:
#include <stdio.h>
#include <io.h>
#include <alloc.h>
#include <fcntl.h>
#include <process.h>
#include <sysstat.h>
int main(void)
{
void *buf;
int handle, bytes;
buf = malloc(10);
/*
Looks for a file in the current directory named TEST.$$$ and attempts
to read 10 bytes from it. To use this example you should create the
file TEST.$$$
*/
if ((handle =
open("TEST.$$$", O_RDONLY | O_BINARY, S_IWRITE | S_IREAD)) == -1)
{
printf("Error Opening File
");
exit(1);
}
if ((bytes = read(handle, buf, 10)) == -1) {
printf("Read Failed.
");
exit(1);
}
else {
printf("Read: %d bytes read.
", bytes);
}
return 0;
}