Question

我正在尝试在C＃中创建一个5,4数组，其中每个单元格都由用户数据组成。我下面的代码有时有效，但不一致。例如，我可以将数据输入到单元格[4,5]或[3,4]中。但是，有时当我运行代码时，它不接受数据并显示一个空单元格。和任何提示？

        decimal[,] departments = new decimal[4, 5];

        //int count = 0;
        Console.WriteLine("If you would like to run the program, type enter");
        string exit = Console.ReadLine();       
        while (exit != "yes")
        {
            Console.WriteLine("What is the department number that you would like to enter sales for? Enter 9 to exit");
            int departmentNo = int.Parse(Console.ReadLine());
            Console.WriteLine("What day would you like to enter sales for?");
            int input = int.Parse(Console.ReadLine());

            Console.WriteLine("Enter sales");
            departments[departmentNo, input] = decimal.Parse(Console.ReadLine());
            Console.WriteLine("If you are finished, enter yes");
            exit = Console.ReadLine();

        }

示例输出

Answer 1

您可以使用.GetUpperBound(dimension)来获取特定尺寸的最大界限（在下面的示例中，每个尺寸将返回1）。一旦掌握了这些，您只需要遍历每个位置即可（我假设您只需要在每个位置填充数据即可。）

这里是一个示例：

int[,] items = new int[2, 2];
int width = items.GetUpperBound(0) + 1;
int height = items.GetUpperBound(1) + 1;
for (int x = 0; x < width; ++x)
{
    for (int y = 0; y < height; ++y)
    {
        string input;
        int inputValue;
        do
        {
            Console.WriteLine($"Please input value for ({x},{y}): ");
        }
        while (!int.TryParse(input = Console.ReadLine(), out inputValue));
        items[x, y] = inputValue;
    }
}

或者，如果您确实需要用户能够指定销售价格所在的位置，则可以更新代码以添加一些验证检查：

while (exit != "yes")
{
    Console.WriteLine("What is the department number that you would like to enter sales for? Enter 9 to exit");
    int departmentNo = int.Parse(Console.ReadLine());
    if (departmentNo > departments.GetUpperBound(0) || departmentNo < 0)
    {
        Console.WriteLine("Please enter a valid department number.");
        continue;
    }
    Console.WriteLine("What day would you like to enter sales for?");
    int input = int.Parse(Console.ReadLine());
    if (input > departments.GetUpperBound(1) || input < 0)
    {
        Console.WriteLine("Please enter a valid input.");
        continue;
    }

    Console.WriteLine("Enter sales");
    if (!decimal.TryParse(Console.ReadLine(), out decimal value))
    {
        Console.WriteLine("Please enter a valid sales figure.");
        continue;
    }
    departments[departmentNo, input] = value;
    Console.WriteLine("If you are finished, enter yes");
    exit = Console.ReadLine();
}

您可能希望将其更改为与上面的示例类似，以便在输入不正确时不必再次重新启动整个循环。

Answer 2

由于departments的长度为[4,5]，这意味着departmentNo只能在0-3范围内，而input只能在0-4范围内范围decimal。另外，±1.0 x 10^28 to ±7.9228 x 10^28关键字表示128位数据类型，这意味着一个单元格的值在if范围内，这意味着大约28-29个有效数字。您应该设置一些@Test public void edocument_status() throws Exception { ObjectMapper mapper = new ObjectMapper(); String body =""; Map<String, String> map = new HashMap<String,String>(); map.put("locale", locale); map.put("empKey", empKey); map.put("applKey", applKey); map.put("apprStatCd", apprStatCd); map.put("returnReason", returnReason); body=mapper.writeValueAsString(map); testPostMethod("/edocument/status", body); }条件，以确保输入值在可用范围内。

如何通过用户输入填充二维数组？

2 个答案: