元元不絕

public class Ch04 {

  public static void main(String[] args) {

       System.out.print("輸入一個正整數：");

       Scanner sc=new Scanner(System.in); //接收輸入的整數

       int input=sc.nextInt();

       System.out.print(input+"=");  //顯示＂輸入的整數=＂

       for (int i = 2; i <= input; i++) {            //i為除數

           while(input%i==0&&input!=i) {

              input=input/i;

              System.out.print(i+"*");         

   } 

             if(input==i){     

              System.out.print(i);

              break;

           }        

       }        

       sc.close();  //關掉Scanner

    }  

}

     for (int i = 2; i <= input; i++) {            //i為除數

           while(input%i==0&&input!=i) {

              input=input/i;

              System.out.print(i+"*");         

   } 

 if(input==i){   

              System.out.print(i);

              break;

           }        

       }