Question

怎样用lseek()函数将一个文件的内容附加到另一个文件上？

谢谢大家~最好有示例程序~~

Answer 1

int main()
{
int iSrcFd = 0;
int iDesFd = 0;
CHAR acReadBuf[128] = {0};
int iReadBytes = 0;
int iWrtBytes = 0;

/* open the source file*/
iSrcFd = open("1.txt",O_RDWR | O_SYNC);
if (iSrcFd < 0)
{
return -1;
}

iReadBytes = read(iSrcFd, acReadBuf, 128);

/* open the des file */
iDesFd = open("2.txt",O_RDWR | O_SYNC);
if (iSrcFd < 0)
{
close(iSrcFd);
return -1;
}
lseek(iDesFd, 0, SEEK_END);
iWrtBytes = write(iDesFd, acReadBuf, 128);
close(iDesFd);
close(iSrcFd);
return 0;
}
lseek(iDesFd, 0, SEEK_END);就是将当前文件读写的位置移动到文件末尾

Answer 2

难道是北邮国院的。。。

追问

屎的= =