为什么不能同时使用静态和寄存器存储类? [英] Why can't the static and register storage classes be used together?

问题描述

以以下方式定义变量时:

When defining a variable in the following manner:

static register int a1 = 0;

我们收到错误:

error: multiple storage classes in declaration specifiers

此错误是否有任何根本原因?为什么不能既将变量存储在寄存器中，又不能仅在启动/首次调用时将其初始化? 可以将寄存器存储类附加到全局变量.<-不正确

Is there any fundamental reason for this error? Why can't a variable be both stored in a register, and also be initialized only at start up/first call? It is possible to attach the register storage class to a global variable. <- edit: not true

推荐答案

如果编译器如实地实现了您想要的功能，则它将占用CPU寄存器以占用程序的长度.这几乎是不现实的.

If a compiler implemented what you wanted faithfully then it would tie up a CPU register for the length of your program. That's hardly practical.

请记住，register仅是建议性的.

Remember that register is only advisory.

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