For simplicity, you should have the row pointer always wrap back to the beginning if the end of the file is reached.

为了简单起见，如果已经到达了文件的末端，您应该使这个行指针回到开始。

youdao

For simplicity, you should have the row pointer always wrap back to the beginning if the end of the file is reached.

为了简单起见，如果已经到达了文件的末端，您应该使这个行指针回到开始。

youdao