为什么在C中每次执行后变量的地址都会改变? [英] Why address of a variable change after each execution in C?

问题描述

int i=10;
printf("Address of i = %u",&i);

Output:
Address if i = 3220204848

Output on re-execution:
Address of i = 3216532594

每次执行程序时，都会得到一个新的地址i.这意味着什么?

I get a new address of i each time I execute the program. What does this signify?

推荐答案

它表示您每次运行程序时都在为其加载一个不同的(虚拟)地址.这是称为地址空间布局随机化(ASLR)的功能，并且是大多数现代操作系统的功能

It signifies that your program is being loaded a different (virtual) address each time you run it. This is a feature called Address Space Layout Randomization (ASLR) and is a feature of most modern operating systems.

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