可以地址被分配给在C变量？ [英] Can an address be assigned to a variable in C?

问题描述

是否有可能分配一个变量，你需要的地址，内存中的？

Is it possible to assign a variable the address you want, in the memory?

我想这样做，但我得到要求作为转让的左操作数的左值。

I tried to do so but I am getting an error as "Lvalue required as left operand of assignment".

int main() {
  int i = 10;
  &i = 7200;
  printf("i=%d address=%u", i, &i);
}

什么是错我的做法？
是否有任何C方式中，我们可以将我们想要的地址，给一个变量？

What is wrong with my approach? Is there any way in C in which we can assign an address we want, to a variable?

推荐答案

不能直接。
你可以这样做，但：INT * I​​ = 7200;
..然后我使用（即* I = 10），但你很可能得到一个崩溃。做低层次发展时，这仅仅是有意义的 - 设备驱动程序，等等与已知的内存addreses

Not directly. You can do this though : int* i = 7200; .. and then use i (ie. *i = 10) but you will most likely get a crash. This is only meaningful when doing low level development - device drivers, etc... with known memory addreses.

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