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代码说明：

  大家都认为，c语言之所以强大，以及其自由性，很大部分体现在其灵活的指针运用上。因此，说指针是c语言的灵魂，一点都不为过。同时，这种说法也让很多人产生误解，似乎只有C语言的指针才能算指针。basic不支持指针，在此不论。其实，pascal语言本身也是支持指针的。从最初的pascal发展至今的object pascal，可以说在指针运用上，丝毫不会逊色于c语言的指针。(Everyone thinks, c language were strong, as well as its freedom, it is reflected in its most flexible use of the pointer. Therefore, said pointer is c language of the soul, can not be overemphasized. At the same time, this argument also let a lot of people misunderstand, it seems that only the C language can be considered a pointer to pointer. basic does not support pointers in this matter. In fact, pascal language itself is also supported by the pointer. Pascal far from the initial development of the object pascal, can be said that the use of the pointer, and in no way inferior to the c language pointer.)