Question

我想首先将每个if语句分隔成单独的函数，然后确保菜单循环直到有效输入为止。

有人可以就如何解决这个问题给我一些好的建议吗？

我在以下行上也有编译时错误：

for(int i = 0; i < integer_array.length; i++)

我似乎无法弄明白为什么。

这是我的完整代码

int option;

Console.WriteLine("                                     ---  Random Number Generator  --- ");
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("                                  Entre a number to Navigate");
Console.WriteLine();
Console.WriteLine("1).Run  Random Number Generator");
Console.WriteLine("2).Open Help Menu");
Console.WriteLine("3).Generate random numbers from a specific range. ");
Console.WriteLine("4).Exit ");

option= Convert.ToInt16(Console.ReadLine()); // Input by user which if statment to run 

if (option == 1)
{
    Console.Clear();
    Console.WriteLine("                                     ---  Random Number Generator  --- ");

    Random rand_number = new Random(); // creates a randon number

    HashSet<int> numbers = new HashSet<int>();

    while (numbers.Count < 6)
    {
        int new_number = rand_number.Next(1, 50);

        if (!numbers.Contains(new_number))
            numbers.Add(new_number);
    } // creates 6 ramdon numbers between 1 and 50 and removes duplicate  

    int[] integer_array = numbers.ToArray(); // puts number in array 
    Array.Sort(integer_array); // sorts the array in assending order.


    Console.WriteLine(integer_array[0]); // Displays the first element of array 
    Console.WriteLine(integer_array[1]); // Displays the Second element of array 
    Console.WriteLine(integer_array[2]); // Displays the third element of array 
    Console.WriteLine(integer_array[3]);
    Console.WriteLine(integer_array[4]);
    Console.WriteLine(integer_array[5]);
    Console.WriteLine();
    Console.WriteLine("Press any key to Exit");


}

else if (option == 2)
{
    Console.Clear();
    Console.WriteLine("                                     ---  Random Number Generator  --- ");
    Console.WriteLine();
    Console.WriteLine();
    Console.WriteLine("                                                   Help Menu");
    Console.WriteLine();
    Console.WriteLine("To navigate through the program type in the number related to the task then press enter.For example To exit the program press 4 and then press enter.");
    Console.WriteLine();
    Console.WriteLine();
    Console.WriteLine("Press any key to Exit");
}
else if (option == 3)
{
    int min, max, howMany;
    Console.Clear();
    Console.WriteLine("                                     ---  Random Number Generator  --- ");
    Console.WriteLine();
    Console.WriteLine();
    Console.WriteLine("Entre the Minmun Value");
    min =Convert.ToInt16(Console.ReadLine());
    Console.WriteLine("Entre the Maximin Value");
    max = Convert.ToInt16(Console.ReadLine())+1;
    Console.WriteLine("How many random number you want to generate");
    howMany = Convert.ToInt16(Console.ReadLine());
    Console.Clear();


    Random rand_number = new Random();  // creates a randon number

    HashSet<int> numbers = new HashSet<int>();

    while (numbers.Count < howMany)
    {
        int new_number = rand_number.Next(min, max);

        if (!numbers.Contains(new_number))
            numbers.Add(new_number);
    }  // creates howMany (input by user) ramdon numbers between min (input by user) and  max (input by user)and removes duplicates

    int[] integer_array = numbers.ToArray();   // puts number in array 
    Array.Sort(integer_array);  // sorts the array in assending order.


    Console.WriteLine("                                     ---  Random Number Generator  --- ");
    Console.WriteLine();
    Console.WriteLine();


    for (int i = 0; i < integer_array.length; i++) // this loop gives error length is under lined with red squiggly line 
    {
        Console.WriteLine(integer_array[i]);
    }   // Displays the elements of array 

    Console.WriteLine("Press any key to Exit");

}
else if (option == 4)
{
    Console.WriteLine("Press any key to Exit");

}

else
{
    Console.WriteLine("Incorrect option slected press any key to Exit");
}

Console.ReadKey();

Answer 1

首先，你的for循环结束（给你一个错误的那个）。包含拼写错误的财产。

integer_array.length

实际应该是

integer_array.Length

＆＃39;长度＆＃39;财产是＆＃39;长度＆＃39;在C＃

确保在按下任何正确的输入键之前循环代码。您可以使用

封装整个代码体

while(true) {
// Your code here
}

然后确保最后;在每个if语句中。您应该添加关键字

break;

当然除了最后一个。

最后一件事。为了将每个if语句分成它们自己的函数，你所要做的就是......（例如）

更改以下代码

    else if (option == 2)
    {
        Console.Clear();
        Console.WriteLine("                                     ---  Random Number Generator  --- ");
        Console.WriteLine();
        Console.WriteLine();
        Console.WriteLine("                                                   Help Menu");
        Console.WriteLine();
        Console.WriteLine("To navigate through the program type in the number related to the task then press enter.For example To exit the program press 4 and then press enter.");
        Console.WriteLine();
        Console.WriteLine();
        Console.WriteLine("Press any key to Exit");
    }

向

    else if (option == 2)
    {
        OpenHelpMenu();
    }

然后在文件的末尾;在最后两个右括号} 之前添加新功能

void OpenHelpMenu() {
  Console.Clear();
  Console.WriteLine("                                     ---  Random Number Generator  --- ");
  Console.WriteLine();
  Console.WriteLine();
  Console.WriteLine("                                                   Help Menu");
  Console.WriteLine();
  Console.WriteLine("To navigate through the program type in the number related to the task then press enter.For example To exit the program press 4 and then press enter.");
  Console.WriteLine();
  Console.WriteLine();
  Console.WriteLine("Press any key to Exit");
}

对每个if语句重复，你应该没问题： - ）

C＃，如何制作和调用功能

1 个答案: