从数组中检索多维数组

I'm going crazy with pointers in C at the moment. I have the following two multi-dimensional arrays:

我现在对C中的指针很着迷。我有以下两个多维数组:

int num0[5][3] =
{ {0,1,0},
  {1,0,1},
  {0,1,0},
  {1,0,1},
  {0,1,0}
};

int num1[5][3] =
{ {1,1,1},
  {1,0,1},
  {0,1,1},
  {0,1,0},
  {1,0,0}
};

These are then packed into another array as such:

然后将它们打包到另一个数组中:

int (*numbers[])[3] = { num0, num1 };

If I then do:

如果我那么做:

printf( "Result: %d\n", numbers[0][2][2] );

I get the expected result, in this case Result: 1.

我得到了预期的结果，在这种情况下结果是:1。

However, I'd like to assign numbers[0] to another variable. So in a modern programming language, you'd do something as simple as:

但是，我想将数字[0]分配给另一个变量。所以在现代编程语言中，你可以做一些简单的事情:

int newvar[5][3] = numbers[0];
printf( "Result: %d\n", newvar[2][2] );

Even though my pointer knowledge is limited, I know this isn't going to work (and it of course doesn't). But for the life of me I can't figure out the correct syntax to make it work (and more importantly, understand WHY it works).

尽管我的指针知识有限，但我知道这不会起作用(当然也不会)。但对我来说，我无法找到正确的语法来使它工作(更重要的是，理解它为什么工作)。

If anyone out there can help me out here I'd really appreciate it!

如果有人能帮助我，我将非常感激!

Thanks

谢谢

1 个解决方案

#1

You cannot assign arrays in C, use memcpy to copy arrays:

不能在C中分配数组，使用memcpy复制数组:

 memcpy(newvar, numbers[0], sizeof newvar);