用数组声明函数 首先，我是C++ NoOB！好了，我需要声明一个初始化网格的函数。该函数将int数组作为输入，需要返回int数组。我有：

如果通过引用传递数组，则不需要返回任何内容：

#include <array>
#include <iostream>

static const int NB_ROWS = 10;
static const int NB_COLUMN = 10;
static const int WATER = 0;

void InitializeGrid (std::array<std::array<int, NB_COLUMN>, NB_ROWS> &grid)
{
    for (auto &row : grid)
    {
        for (auto &col : row)
        {
            col = WATER;
            std::cout << col << " ";
        }
        std::cout << '\n';
    }
}

int main()
{
    std::array<std::array<int, NB_COLUMN>, NB_ROWS> grid;
    InitializeGrid(grid);
}

---

将所有元素初始化为零。

array看起来无效，假设它是std:：array。你返回的数组应该包含什么？你的问题是-什么？

#include <array>
#include <iostream>

static const int NB_ROWS = 10;
static const int NB_COLUMN = 10;
static const int WATER = 0;

void InitializeGrid (std::array<std::array<int, NB_COLUMN>, NB_ROWS> &grid)
{
    for (auto &row : grid)
    {
        for (auto &col : row)
        {
            col = WATER;
            std::cout << col << " ";
        }
        std::cout << '\n';
    }
}

int main()
{
    std::array<std::array<int, NB_COLUMN>, NB_ROWS> grid;
    InitializeGrid(grid);
}

std::array<std::array<int, NB_COLUMN>, NB_ROWS> grid{};