Java語言編寫購物結算系統

這也算一個實驗了，可以試一下。

import java.util.Scanner;

public class StoreCharge {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("輸入應付金額：");

double x = sc.nextDouble();

Price p1 = ampayable(x);

System.out.println(p1.toString());

System.out.println("輸入實付金額：");

double y = sc.nextDouble();

Price p2 = ampaid(y);

System.out.println(p2.toString());

System.out.println("找零："+charge(p1,p2).toString());

charge(p1,p2);

}

public static Price charge(Price p1,Price p2){

int c,b;

if(p2.conner<p1.conner){

b = p2.conner+10-p1.conner;

p2.element = p2.element-1;

}else

b = p2.conner-p1.conner;

c = p2.element - p1.element;

return new Price(c,b);

}

public static Price ampayable(double x){

Price a = new Price();

a.element = (int)x;

a.conner = (int)(x*10 -((int)x)*10);

return a;

}

public static Price ampaid(double x){

Price a = new Price();

a.element = (int)x;

a.conner = (int)(x*10 -((int)x)*10);

return a;

}

}

class Price{

int element;

int conner;

public Price(){}

public Price(int e,int c){

element = e;

conner = c;

}

public String toString(){

return element+"元"+conner+"角";

}

}