C++ 生命游戏无限循环函数

Question

生命游戏任务中的这个函数应该遍历第二个数组并检查每个单元格有多少邻居。当我在 main 中调用它时，即使在任何类型的循环中，终端都会冻结，就像在无限的 while 循环中一样。谁能告诉我我的代码有什么问题？谢谢。

void Grids::simulate(int** myGrid, int rows, int columns)
{
    int neighbors = 0; //variable to store how many neighbors a cell has
    for (int r = 0; r < rows; ++r) // iterates through rows
    {
        for(int c = 0; c < columns; ++c)//iterates through columns
        {
            for(int x = -1; x < 2; x + 2) //iterates through -1 and 1, the spaces next to the cell
            {
                for(int y = -1; y < 2; y + 2)
                {
                    if ((r + x >= 0) && (r + x < rows) && (c + y >= 0) && (c + y < columns)) //prevents indexing the 2d array outside of its bounds
                    {
                        if (myGrid[r + x][c + y] == 1) //checks if the surrounding cells are alive
                        {
                            ++neighbors;
                        }
                    }
                }
            }
            if (neighbors < 2) //underpopulation
            {
                myGrid[r][c] = 0; //dead
            }
            else if (neighbors == 3) //reproduction
            {
                myGrid[r][c] = 1; //alive
            }
            else if (neighbors >= 4) //overpopulation
            {
                myGrid[r][c] = 0; //dead
            }
        }
    }
}

Answer 1

您应该将此x + 2 更改为x += 2 并将y + 2 更改为y += 2，以使循环每个周期增加2。我还建议您删除此行中多余的括号 if (r + x >= 0 && r + x < rows && c + y >= 0 && c + y < columns)。