英文:
Conversion of Fahrenheit to Celsius and taking input from the user to modify
问题
import java.util.Scanner;
public class FHeightToCelsius {
public static void main(String[] args)
//计算输入的华氏温度值对应的摄氏温度
//使用公式 C=(F-32)*5/9
{
final int BASE = -32;
final double CONVERSION_FACTOR = 5.0/9.0; // 请注意：这里需要使用浮点数除法
Double message;
Scanner scan = new Scanner(System.in);
System.out.println("输入华氏温度："); // 修改为中文提示
message = scan.nextDouble();
double CelsiusTemp;
CelsiusTemp = (message + BASE) * CONVERSION_FACTOR;
System.out.println("转换后的摄氏温度是：" + CelsiusTemp); // 修改为中文提示
}
}
数学不是我的强项，问题解决也不是（但我会努力的！）我还需要帮助理解和完善这个公式是否正确，以及我们如何在代码中应用它。我在网上查找了这个公式，但不确定我是否正确地在代码中转换了它。
我无法让数学公式正常工作。
英文:
import java.util.Scanner;
public class FHeightToCelsius {
public static void main(String[] args)
//Computes the Celsius equivalent of the inputted Fahrenheit value
//using the formula C=(F-32)*5/9
{
final int BASE = -32;
final double CONVERSION_FACTOR = 5/9;
Double message;
Scanner scan = new Scanner(System.in);
System.out.println("Enter A Fahrenheit:");
message = scan.nextDouble();
double CelsiusTemp;
CelsiusTemp = (message + BASE) * CONVERSION_FACTOR;
System.out.println("Your conversion is:" + CelsiusTemp);
}
}
Math isn't my strong suit, nor is problem solving (YET!!)
What I also need help with is fleshing out and understanding if this formula is right or correct and how we come about that. I looked up the formula online, but, I'm not sure if I converted it right in code.
I cannot get the math formula to work.
答案1
得分: 1
错误消息已经说得很清楚了。您正试图对字符串执行数学操作，这是不允许的。因此，请将您的字符串转换为数字。
英文:
The error message says it all. You're trying to perform mathematical operations on strings, that's not allowed. So turn your strings into numbers.
答案2
得分: 1
I'm new to Java, but I probably know the solution to your problem.
问题是你试图将int添加到String类型的变量。
我建议进行以下更改：
import java.util.Scanner;
public class Main {
public static void main(String[] args)
//使用公式C=(F-32)*5/9计算输入的华氏温度值的摄氏温度等价值
{
final int BASE = -32;
//如果你使用变量double，应该除以5.0 / 9
final double CONVERSION_FACTOR = 5.0 / 9;
Scanner scan = new Scanner(System.in);
System.out.println("输入华氏温度：");
//为了避免我上面描述的问题，请使用nextInt()方法而不是nextLine()
int message = scan.nextInt();
double CelsiusTemp = (message + BASE) * CONVERSION_FACTOR;
//我用转换后的值替换了"message"
System.out.println("你的转换结果是：" + CelsiusTemp);
}
}
我希望我有所帮助。
英文:
I'm new to Java, but I probably know the solution to your problem.
The problem is that you are trying to add an int to a String type variable.
I suggest the following changes:
import java.util.Scanner;
public class Main {
public static void main(String[] args)
//Computes the Celsius equivalent of the inputted Fahrenheit value
//using the formula C=(F-32)*5/9
{
final int BASE = -32;
// If you use the variable double you should divide 5.0 / 9
final double CONVERSION_FACTOR = 5.0 /9;
Scanner scan = new Scanner(System.in);
System.out.println("Enter A Fahrenheit:");
// to avoid the problem I described above use the nextInt() method instead of nextLine()
int message = scan.nextInt();
double CelsiusTemp = (message + BASE) * CONVERSION_FACTOR;
// I replaced "message" with the converted value
System.out.println("Your conversion is:" + CelsiusTemp);
}
}
I hope I helped.
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