如何为每个循环转换我的循环？ [英] How Would I Convert My For Loops To For Each Loop?

问题描述

我使用for循环制作了一个菱形图案程序。我想用foreach循环来做。任何人都可以请帮助我如何将我的for循环转换为foreach循环。



这是代码：

I have made a diamond pattern program using for loop. I want to do it using foreach loop. Any one can please help me out how do i convert my for loops to foreach loop.

Here is code:

Console.WriteLine("Program for displaying pattern of *.");

          Console.Write("Enter the maximum number of *: ");

          int n = Convert.ToInt32(Console.ReadLine());
          Console.WriteLine("\nHere is the Diamond of Stars\n");
          for (int i = 0; i <= (n - 1); i = i + 2)
          {
              for (int j = 0; j <= i; j++)
                  Console.Write("*");
              Console.WriteLine();
          }
          for (int i = n - 1; i >= 1; i = i - 2)
          {
              for (int j = 0; j < (i - 1); j++)
                  Console.Write("*");
              Console.WriteLine();
          }

推荐答案

在这些情况下，尝试没有任何意义：你没有使用对象的集合，因此没有foreach循环的基础 - 这些仅在您通过实现IEnumerable或IEnumerable< T>的对象集合进行迭代时起作用。接口。

Int32 不这样做，所以你不能使用 foreach 替换 for 循环。

In those cases, it makes no sense to try: you aren't using a collection of objects, so there is no base for a foreach loop - these only work when you are iterating though a collection of objects that implements the IEnumerable or IEnumerable<T> interface.
Int32 doesn't do that, so you can't use a foreach to replace your for loops.

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