int num = *(int *)number;这是做什么的? [英] int num = *(int *)number; What does this do?

问题描述

我正在看一些c ++代码，并且看到了:

I was looking at some c++ code, and I saw this:

int num = *(int *)number;

我以前从未见过?它在一个这样标记的函数中:

I had never seen this before? it was in a function labeled as such:

void *customer(void *number){ }

那还能做什么?有其他显示方式吗?

What does that even do? Is there a different way to show this?

谢谢，这不是功课，但我只是对它的作用感到困惑?

Thanks, this isn't homework btw I was just confused at what this does?

推荐答案

(int *)部分将变量号强制转换为指向int的指针，然后前面的*将其取消引用为int.

The (int *) part casts the variable number to a pointer to an int, then the * in front dereferences it to an int.

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