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On pointers again.pdf

2021-01-30
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Pointers are a core content in the C language specification. Pointers have inherent advantages. Pointers can be used to write many short, powerful and highly efficient codes. It is an irreplaceable weapon of C language. With this weapon, C language is at least one step ahead of other high-level languages in terms of efficiency. However, because the principles and usage of pointers are quite different from people\'s usual thinking habits, pointers are much more difficult to understand than other concepts in C language. This makes the lack of understanding of pointers a common phenomenon among C programmers. This deficiency will inevitably lead to programmers constantly suffering setbacks in the process of using pointers. With more setbacks, pointers seem to become an insurmountable obstacle, and fear arises spontaneously. In the face of fear, some programmers even have the idea of avoiding the use of pointers, which is very undesirable. Pointers are so sharp that it is what makes C language so powerful. If you just give up on it, then C language will be learned in vain. We should let pointers become the unparalleled sword of Narsil in your hand that cuts off the ring from Sauron\'s finger, rather than the eternal ring in your heart.

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