C# "Method Name Expected"

Question

我正在制作一个非常简单的BMI计算器，我已经工作了，但不得不更改舍入问题，现在我遇到了"预期的方法名称"，用于userWeight和userHeight的最终输出。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

Console.WriteLine 的格式有点不对劲。 你写道：

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

但你想做的是这样的：

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，还有其他方法可以格式化字符串，但这在:)也足够了。

Answer 2

问题出在您的Writeline()方法上。请按以下方式更改它：

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

Answer 3

你可以试试这个： 这将打印带有两个十进制数字的双精度。

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);