如何返回静态数组指针 [英] How to return a static array pointer

问题描述

我正在尝试创建一个函数，该函数使用默认值创建一个二维数组.然后，该函数应返回该静态数组的指针.

I'm trying to create a function that creates a bidimensional array with default values. And then, the function should return the pointer for that static array.

int* novoTabuleiro() {

    static int *novoTabuleiro[LINHAS][COLUNAS];

    //Some changes

    return novoTabuleiro;
}

然后我想做这样的事情:

And then I want to do something like this:

int *tabuleiroJogador = novoTabuleiro();

上面的函数有什么问题.我收到的错误是从不兼容的指针类型返回".谢谢.

What is wrong in the function above. The error I receive is "return from incompatible pointer type". Thanks.

推荐答案

您的注释表明该数组应为整数的二维数组:

Your comments indicate that the array is meant to be a 2-D array of ints:

static int novoTabuleiro[LINHAS][COLUNAS];
return novoTabuleiro;

由于数组指针的衰减，return语句中的表达式 novoTabuleiro 的含义与& novoTabuleiro [0] 相同.

Due to array-pointer decay, the expression novoTabuleiro in the return statement means the same as &novoTabuleiro[0].

novoTabuleiro [0] 的类型为"int的数组[COLUNAS]"，即 int [COLUNAS] .因此，指向它的指针是 int(*)[COLUNAS] .

The type of novoTabuleiro[0] is "array [COLUNAS] of int" , i.e. int [COLUNAS]. So a pointer to this is int (*)[COLUNAS].

这意味着您的功能必须是:

That means your function needs to be:

int (*func())[COLUNAS]  {

，调用代码为:

int (*tabuleiroJogador)[COLUNAS] = func();

为函数使用不同的名称要比为函数内的数组名称使用的混淆少.

It would be less confusing to use a different name for the function than you use for the name of the array within the function.

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