java.計算電費

import java.util.Scanner;public class Computer {public static void main(String args[]){Scanner reader = new Scanner(System.in);double amount=0;double price=0;System.out.print("輸入電量：");amount=reader.nextDouble();if (amount<=90&&amount>=1){price=amount*0.6;}else if (amount<=150&&amount>=91){price=90*0.6+(amount-90)*1.1;}else if(amount>150){price=90*0.6+(150-90)*1.1+(amount-150)*1.7;}else {System.out.println("輸入電量"+amount+"不合理");}System.out.printf("電費：%5.2f",price);}}