如何用Java語言編寫購物結算系統？
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";
}
}
