查看字符串内插的解决方案

已完成

以下代码是上一单元中所述挑战的一种可能的解决方案。

string customerName = "Ms. Barros";

string currentProduct = "Magic Yield";
int currentShares = 2975000;
decimal currentReturn = 0.1275m;
decimal currentProfit = 55000000.0m;

string newProduct = "Glorious Future";
decimal newReturn = 0.13125m;
decimal newProfit = 63000000.0m;

Console.WriteLine($"Dear {customerName},");
Console.WriteLine($"As a customer of our {currentProduct} offering we are excited to tell you about a new financial product that would dramatically increase your return.\n");
Console.WriteLine($"Currently, you own {currentShares:N} shares at a return of {currentReturn:P}.\n");
Console.WriteLine($"Our new product, {newProduct} offers a return of {newReturn:P}.  Given your current volume, your potential profit would be {newProfit:C}.\n");

Console.WriteLine("Here's a quick comparison:\n");

string comparisonMessage = "";

comparisonMessage = currentProduct.PadRight(20);
comparisonMessage += String.Format("{0:P}", currentReturn).PadRight(10);
comparisonMessage += String.Format("{0:C}", currentProfit).PadRight(20);

comparisonMessage += "\n";
comparisonMessage += newProduct.PadRight(20);
comparisonMessage += String.Format("{0:P}", newReturn).PadRight(10);
comparisonMessage += String.Format("{0:C}", newProfit).PadRight(20);

Console.WriteLine(comparisonMessage);

此代码只是“一种可能的解决方案”，因为它很大程度上取决于你决定实现逻辑的方式。 只要你使用此模块中介绍的技术来设置字符串、填充字符串等的格式，并且输出与质询输出匹配，那么你就做得很棒！

Dear Ms. Barros,
As a customer of our Magic Yield offering we are excited to tell you about a new financial product that would dramatically increase your return.

Currently, you own 2,975,000.00 shares at a return of 12.75%.

Our new product, Glorious Future offers a return of 13.13%.  Given your current volume, your potential profit would be $63,000,000.00.

Here's a quick comparison:

Magic Yield         12.75%   $55,000,000.00      
Glorious Future     13.13%   $63,000,000.00  

如果成功了，恭喜你！

解决方案详细信息

可以继续本部分，了解给定解决方案如何解决此挑战。

1. 花一分钟时间查看解决方案代码。

   可以开始分解解决方案，并首先解决将问候语和打开段落写入终端的问题。 下面的代码可解决使用字符串内插显示问候语 Dear Ms. Barros, 的问题。 现在应熟悉模式 Console.WriteLine($"Your text {yourVariable}");：

   string customerName = "Ms. Barros";
   Console.WriteLine($"Dear {customerName},");
   

   代码输出为：

   Dear Ms. Barros,   
   

   再次查看示例完整解决方案。 解决方案的前半部分使用字符串内插来显示第一段的每个部分。

   注释

   复合格式设置，例如 Console.WriteLine("Dear {0},", customerName) 另一种可能的解决方案。

2. 解决方案的第二部分通过使用字符串串联 string.Format() 、复合格式、格式说明符（百分比和货币） PadRight()逐步生成长字符串来显示比较表。

   以下代码生成表的第一行，并添加 Console.WriteLine() 每个生成字符串 comparisonMessage的步骤后。

   string currentProduct = "Magic Yield";
   int currentShares = 2975000;
   decimal currentReturn = 0.1275m;
   decimal currentProfit = 55000000.0m;
   string comparisonMessage = "";
   
   comparisonMessage = currentProduct.PadRight(20);
   Console.WriteLine(comparisonMessage);
   
   comparisonMessage += String.Format("{0:P}", currentReturn).PadRight(10);
   Console.WriteLine(comparisonMessage);
   
   comparisonMessage += String.Format("{0:C}", currentProfit).PadRight(20);
   Console.WriteLine(comparisonMessage);
   

   以下示例输出显示了如何通过三个步骤生成比较表的第一行。

   Magic Yield
   Magic Yield         12.75%
   Magic Yield         12.75%    $55,000,000.00
   

如果在完成此项挑战时遇到问题，可能需要先回顾前面的几个单元，然后再继续。