#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#define SIZE 1024
int main()
{
// 打开要读的文件
int fd1 = open("1.ppt", O_RDONLY);
if (fd1 == -1)
{
perror ("open fd1");
return -1;
}
int fd2 = open("2.ppt", O_WRONLY|O_CREAT, 0777);
if (fd2 == -1)
{
perror ("open fd2");
return -1;
}
int ret = 0;
char buf[SIZE] = {0};
while (ret = read (fd1, buf, SIZE))
{
if (ret == -1)
{
perror("read");
break;
}
write (fd2, buf, ret);
}
printf ("文件复制完成\n");
close (fd1);
close (fd2);
return 0;
}
