因此，如果希望只存储一个字节，且试图在未对齐的地址直接存储，那么它就会进入到不正确的位置并会截断四字内剩余的字节。

Therefore, if you want to store only one byte, if you tried to do it directly on an unaligned address, it would both go into the wrong location and clobber the remaining bytes in the quadword.

youdao

如果每个地址引用一个存储字节，那么一个16位物理地址将允许处理器寻址64 KB内存。

If each address references a byte of storage, a 16-bit physical address would allow a processor to address 64kb of memory.

youdao

返回的是什么？，What, does, malloc, return ？，它返回的是第一个字符，第一个字节的地址，现在在s2中存储的是什么？

Malloc It returns the address of this first byte so really the address of the first char here and so what gets stored in s2 now?

youdao

I store in s1 the address of the first byte that the user typed in and by the way that first bite happens to live in this new place called the heap and that's the only update to the story thus far.

我在s1中存储的是用户输入的字符串的首地址,这样第一个字节存储在这块,新的堆的地方,这个是唯一的修正。

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