Java方法代碼錯誤

Question

我試圖對第二個返回方法進行兩個調用，該方法需要一個參數（以英寸爲單位），並以釐米爲單位打印該值，但不工作！我做了什麼錯`

public static void main(String[] args) { 
    Scanner in = new Scanner(System.in); 

    // prompt the user and get the value 
    System.out.print("Exactly how many inches are you? "); 
    int uHeight = in.nextInt(); 

    // converting and outputing the result 
    System.out.print("How many inches is your mother? "); 
    int mHeight = in.nextInt(); 
    InchesToCm(mHeight,uHeight); 
} 

public static double InchesToCm() { 


Scanner in = new Scanner(System.in); 
System.out.print("Exactly how many inches are you? "); 
int inHeight = in.nextInt(); 
double cmHeight = inHeight * 2.54; 
System.out.println("He's " + uHeight + " inches or " + mHeight + " cm."); 
return 

Answer 1

您應該通過您的mHeight和uHeight，在你的方法，因爲你叫你這樣InchesToCm(mHeight,uHeight);主要方法，所以你的方法應該是這樣的：？

public static double InchesToCm(int mHeight, int uHeight) {//pass your values in method 

其次，你必須在最後返回結果：

return cmHeight;//return the result 

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注意

對於好的做法你的方法應該像@Timothy腳輪小寫字母開頭的評論說，你的類名稱應與上字母

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編輯

啓動對於好的做法您必須使用：

public static void main(String[] args) { 
    Scanner in = new Scanner(System.in); 
    System.out.print("Exactly how many inches are you? "); 
    int uHeight = in.nextInt(); 

    System.out.println("He's " + uHeight + " inches or " + inchesToCm(uHeight) + " cm."); 
    System.out.print("How many inches is your mother? "); 

    int mHeight = in.nextInt(); 
    System.out.println("He's " + mHeight + " inches or " + inchesToCm(mHeight) + " cm."); 
    //------------------------------^^-------------------------------^^------------------ 
    in.close();//close your Scanner 
} 

//Your function should take inches and return cm 
public static double inchesToCm(int height) { 
    return height * 2.54; 
}