C语言 c - 如何将数组的值分配给c中的另一个数组（制作副本）？

How to assign values of array to another array(making copy) in c?

提问by Nakib

I want to copy 2d array and assign it to another.

我想复制二维数组并将其分配给另一个。

In python i will do something like this

在python中我会做这样的事情

grid = [['a','b','c'],['d','e','f'],['g','h','i']]
grid_copy = grid

I want to do same in C.

我想在 C 中做同样的事情。

char grid[3][3] = {{'a','b','c'},{'d','e','f'},{'g','h','i'}};

How do i copy this array to copy_grid ?

我如何将此数组复制到 copy_grid ？

回答by ouah

Use memcpystandard function:

使用memcpy标准功能：

char grid[3][3] = {{'a','b','c'},{'d','e','f'},{'g','h','i'}};
char grid_copy[3][3];

memcpy(grid_copy, grid, sizeof grid_copy);

回答by Omkant

Use memcpy, don't forget to include <string.h>

使用memcpy，不要忘记包括<string.h>

#include <string.h>
void *memcpy(void *dest, const void *src, size_t n);

Or, do it manually using loop put each value one by one.

或者，手动使用循环将每个值一一执行。