錯誤顯示在（INT I = N;我> 0;我 - ）

Question

我試圖編寫代碼的階乘數程序，下面的代碼

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


     System.out.println("Enter the number whose factorial you want: "); 

     int n = in .nextInt(); 
     int f = 1; 
     for (int i = n; i & gt; 0; i--) //error show what's wrong in for loop { 
      f = f * i; 
     } 
     System.out.println("Factorial of " + n + " is " + f); 
    } 
} 

Answer 1

是你的錯誤點是& gt;它不是一個操作員實際操作員是>。 >是XML編碼 from >。

使用此：

for (int i = n; i > 0; i--) 

而不是

for (int i = n; i & gt; 0; i--) 

這種情況通常發生在你複製過去的代碼的某個地方。

---

完整的代碼應該是：

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


     System.out.println("Enter the number whose factorial you want: ");  
     int n = in .nextInt(); 
     int f = 1; 
     for (int i = n; i > 0; i--) //error show what's wrong in for loop { 
      f = f * i; 
     } 
     System.out.println("Factorial of " + n + " is " + f); 
    } 
}