在C中复制结构数组 [英] Copying arrays of structs in C

问题描述

我不使用C语言已有很长时间了，这使我发疯.我有一个结构数组，我需要创建一个将一个数组复制到另一个数组的函数(我需要一个精确的副本)，但是我不知道如何定义函数调用.我想我需要使用指针，但是当我尝试使用它时，会出现错误.

It's been a long since I don't use C language, and this is driving me crazy. I have an array of structs, and I need to create a function which will copy one array to another (I need an exact copy), but I don't know how to define the function call. I guess I need to use pointers, but when I try it gives me an error.

struct group{
    int weight;
    int x_pos;
    int y_pos;
    int width;
    int height;
};

struct group a[4];
struct group b[4];

copySolution(&a, &b);

最后一条声明给我发了一个错误.就像我说的那样，用C语言编程已经很久了，所以我现在有点迷路了:(

That last declaration send me an error. As I said, it's been a long since programming in C, so I'm a bit lost right now :(

推荐答案

应该这样做:

memcpy(&b, &a, sizeof(a));

编辑:顺便说一句:它将在b中保存a的副本.

EDIT: By the way: It will save a copy of a in b.

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