强制和指向函数的指针 cast and pointer to function
当然,我可以通过一个指向函数的指针,但我想通过变量。
Of course I could pass a pointer to a function, but I'd like to pass variable.
返回指向静态数据的指针可能会导致函数不可重入。
Returning a pointer to static data may cause a function to be non-reentrant.
通过使用引用,可以告诉函数指向信息的指针。
By using a reference, you tell the function to point to the information.
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