C#“应为方法名称”

Question

我正在制作一个非常简单的 BMI 计算器，我已经在使用它但不得不改变一个舍入问题，现在我遇到了 userWeight 和 userHeight 的最终输出的“方法名称预期”。 这是代码。

double userWeight;
double userHeight;
double userAnswer;

Console.WriteLine("Welcome to our program for calculating Body Mass Index");
Console.WriteLine("Please enter your weight in pounds.");
userWeight = double.Parse(Console.ReadLine());
Console.WriteLine("Please enter your height in inches.");
userHeight = double.Parse(Console.ReadLine());

userAnswer = (userWeight / (userHeight * userHeight) * 703);

Console.WriteLine("The BMI of a person who weighs ") + userWeight ("pounds and is ") + userHeight ("inches tall has a BMI of ") + userAnswer;
Console.WriteLine("Press any key to exit...");
Console.ReadKey();

Answer 1

问题出在您的Writeline()方法上。 请以这种方式更改它：

Console.WriteLine($"The BMI of a person who weighs {userWeight} pounds and is {userHeight} inches tall has a BMI of {userAnswer}");

Answer 2

您的 Console.WriteLine 的格式有点偏离。 你写了：

        Console.WriteLine("The BMI of a person who weighs ") + userWeight ("pounds and is ") + userHeight ("inches tall has a BMI of ") + userAnswer;

但你想要做的是：

        Console.WriteLine("The BMI of a person who weighs " + userWeight + " pounds and is " + userHeight + " inches tall has a BMI of " + userAnswer);

正如其他人提到的那样，还有其他方法可以格式化字符串，但这也足够了:)。

Answer 3

你可以试试这个：这会用两位十进制数字打印double。

Console.WriteLine(string.Format("The BMI of a person who weighs {0:0.00} pounds and is {1:0.00} inches tall has a BMI of {2:0.00}", userWeight, userHeight, userAnswer));

其他简单的方法是：

Console.WriteLine("The BMI of a person who weighs " + userWeight + " pounds and is " + userHeight + " inches tall has a BMI of " + userAnswer);