They can be 64 bits, but very often on systems today are pointers 32 bits.

也可能为64位，但在通常的,系统中，指针占32位。

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Now, dereferencing works on y and because the pointers are sharing 13 that one pointee, they both see the 13.

现在，解引用在y上起作用了,因为指针共享,同一个指针数据，它们两个都看到了。

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int No. Even though the key word has changed from char to int, the * is the same and the fact that I've got a * there is saying this is a pointer to an int or a pointer to a char pointers are always the same size on a computer.

不，即使即使关键字从char变成了，指针的大小还是一样的,我用*表示这是一个int型指针,而不是char型指针，在同一台机子上,它们的大小是一样的。

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I have to change the prototype of this function to say that swap no longer takes an int per se or another int per se, but rather it takes two pointers, two ints, and in fact, it's on the very last page if you're still flipping.

我改变了这个函数的原型,来说明swap不再携带那两个int数本身，而是携带两个指针，两个整型数指针，实际上，它是在最后那页上。

哈佛公开课 - 计算机科学课程节选