Question

我正在尝试让我的程序询问用户是否希望获得“超级英尺”，如果是，那么它将继续，但如果没有则程序应该说谢谢。有人能帮我辨别出我做错了什么吗？谢谢。

Console.Write("Would you like the super feet as well? ");
Console.ReadLine();

bool yes = true;
if (yes == true)
{
    Console.WriteLine("Please enter the following dims: ");
    Console.ReadLine();
}
else
{
    Console.WriteLine("Ok, Thank you");
    Console.ReadLine();
}

Answer 1

在测试条件之前尝试阅读您的答案。您还需要将答案存储在变量中。

Console.Write("Would you like the super feet as well? ");
var ans = Console.ReadLine();

bool yes = (ans == "yes");
if (yes == true)
{
  Console.WriteLine("Please enter the following dims: ");
  ...Code if yes is true...


}
   else
{
  Console.WriteLine("Ok, Thank you");
  ...Code if yes is false...
}

Answer 2

你做错了两件事：

您没有阅读用户的任何输入，为此，您可以执行以下操作：
```
string answer = Console.ReadLine();
```
您没有根据此输入为bool变量yes赋值，因此，您必须执行类似
的操作
```
if(answer == "yes")
    yes = true;
else
    yes = false;
```

所以，在将这两个插入到你的代码之后，它会像：

    Console.Write("Would you like the super feet as well? ");
    string answer = Console.ReadLine();

    bool yes;
    if(answer == "yes")
        yes = true;
    else
        yes = false;

    if (yes == true)
    {
        Console.WriteLine("Please enter the following dims: ");
        Console.ReadLine();
    }
    else
    {
        Console.WriteLine("Ok, Thank you");
        Console.ReadLine();
    }

当然，如果答案是＆＃34;是＆＃34;，＆＃34; yES＆＃34;你可能也想将bool变量指定为true。等等，为了做到这一点，你可以使用answer = answer.ToLower()

Answer 3

使用以下代码

Console.Write("Would you like the super feet as well? ");
string s =  Console.ReadLine();

///bool yes = true;
if (s.ToLower() == "yes")
{
    Console.WriteLine("Please enter the following dims: ");
    Console.ReadLine();
}
else
{
    Console.WriteLine("Ok, Thank you");
    Console.ReadLine();
}

如何使用if / else语句

3 个答案: