如何使用数组 C# 将每月降雨量输出为“*”？

Question

我创建了一个程序，允许用户输入一年中的降雨量。然后，该程序旨在输出图表以及汇总数据，例如平均、最大、最小和总降雨量。

虽然我基于数据的所有输出都有效，但用于显示带星号输入的数字的实际图表不起作用。

我不太明白我哪里出错了。我已经链接了“*”表的示例输出以及下面的实际代码。任何帮助将非常感激。顺便说一句，我是 C# 的初学者。 Example output

        int[] monthrainfall = new int[12];
        int i;
        double average;
        int total = 0;
        int max = 0;
        int min = Int32.MaxValue;
        string bar = "";

        //title
        Console.Write("\n\nRainfall Data:\n");
        Console.Write("**************\n");

        //asks user to input names
        Console.Write("Enter Rainfall for the year:\n");

        for (i = 0; i < 12; i++)
        {
            Console.Write("Enter rainfall for month {0}: ", i + 1);
            monthrainfall[i] = Convert.ToInt32(Console.ReadLine());
        }

        //outputs rainfall results
        Console.WriteLine("\nRainfall Chart");
        Console.WriteLine("**************");

        //outputs results for each month
        for (i = 0; i < 12; i++)
        {
            Console.Write("Month {0}: ", i + 1);
            bar = bar + "*";
            Console.WriteLine("{0} ", bar[i]);
        }

        Console.WriteLine("\nSummary data");
        Console.WriteLine("**************");

        //calculates the maximum rainfall
        for (int index2 = 0; index2 < 12; index2++) //inline variable declaration
        {
            if (monthrainfall[index2] > max) max = monthrainfall[index2];
        }
        Console.WriteLine("The maximum rainfall was: " + max);

        //calculates the minimum rainfall

        for (int index3 = 0; index3 < 12; index3++) //inline variable declaration
        {
            if (monthrainfall[index3] < min) min = monthrainfall[index3];
        }
        Console.WriteLine("The minimum rainfall was: " + min);

        //calculates average rainfall
        for (int index = 0; index < 12; index++)
        {
            total = total + monthrainfall[index];
        }
        average = (total) / 12;

        Console.WriteLine("The average rainfall was: " + average);
        Console.WriteLine("The total rainfall was: " + total);
        Console.ReadKey();

Answer 1

    for (i = 0; i < 12; i++)
    {   //loop every month
        Console.Write("Month {0}: ", i + 1);
bar = "";
for(int stars = 0; stars < monthrainfall[i]; stars++)
{
    bar = bar + "*";
}
        Console.WriteLine("{0} ", bar[i]);
    }

但正如@Flydog57 所说，使用字符串构造函数而不是额外的 for 循环

Answer 2

所有的解释都将在这部分代码中进行

//outputs results for each month
for (i = 0; i < 12; i++)
{
    Console.Write("Month {0}: ", i + 1);
    bar = bar + "*";
    Console.WriteLine("{0} ", bar[i]);
}

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第 1 部分： 在bar = bar + "*"; 上，您只为循环的每次迭代添加一个*。但是，您需要根据monthrainfall 中输入的内容添加数字。

正如@Flydog57 建议的那样，修改将是 bar = new string('*', monthrainfall[i]);

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第 2 部分： 在Console.WriteLine("{0} ", bar[i]); 上，您只打印了一个*，因为您选择了字符串bar 的元素bar[i]。

修改为Console.WriteLine("{0} ", bar);

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