每个函数中只有很少的变量能够存放在寄存器中，而且，只是确定的类型可以存放在寄存器中。
Only a few variables in each function may be ketp in registers, and only certain types are allowed.
从而，编译器和链接器能够权衡变量在内存中的存放位置。
Consequently, the compiler and linker are able to make sensible choices concerning the placement of the variables in memory.
从而，编译器和链接器能够权衡变量在内存中的存放位置。
Consequently, the compiler and linker are able to make sensible choices concerning the placement of the variables in memory.
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