取消引用结构指针中的指针 [英] Dereference a pointer inside a structure pointer

问题描述

我有一个结构:

struct mystruct
{
    int* pointer;
};

structure mystruct* struct_inst;

现在，我想更改struct_inst->pointer指向的值.我该怎么办?

Now I want to change the value pointed to by struct_inst->pointer. How can I do that?

编辑

我没有写它，但是pointer已经指向用malloc分配的内存区域.

I didn't write it, but pointer already points to an area of memory allocated with malloc.

推荐答案

与任何指针一样.要更改地址，它指向:

As with any pointer. To change the address it points to:

struct_inst->pointer = &var;

要更改其指向的地址上的值:

To change the value at the address to which it points:

*(struct_inst->pointer) = var;

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