清单11被视为一个庞大的条件语句，它基于请求url中的o参数的值执行一个特定的分支。

Listing 11 is best thought of as a giant conditional statement, which executes a particular branch based on the value of the o parameter in the request url.

youdao

如果条件的求值结果为TRUE，那么就将执行语句列表，在循环的顶部恢复控制。

If the condition evaluates to TRUE, the statement list is executed, then control resumes at the top of the loop.

youdao

GO TO标签语句可以无条件地退出循环，并将控制权转移到跟在指定的语句标签之后的可执行语句或语句块。

The GOTO label statement can unconditionally exit from a loop and transfer control to the executable statement or statement block that follows the specified statement label.

youdao