Poj1003- format,小数点后保留

package Poj1003;

 

import java.util.Scanner;

 

public class Cici_1003 {

 

/**

* @param args

*/

public static void main(String[] args) throws Exception{

// TODO Auto-generated method stub

        {

            Scanner cin= new Scanner(System.in);

            float total_closing_balance = 0;

            float temp;

            for(int i=0;i<12;i++){

            temp = cin.nextFloat();

            total_closing_balance = total_closing_balance + temp;

            }

            float average_balance = total_closing_balance/12;

            String result = String.format("%.2f", average_balance);

            System.out.println("$" + result );

            

            

    }

 

}

 

}