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你能幫我在Java中做到這一點嗎？Java中的銷售點
一個命令行銷售點系統，可以計算折扣和總計。該系統應該是賣書的，它應該包含以下產品：如果您購買的兩份
1.相距作者1人，定價在$ 20
2.祕境由author2，定價在$ 40
一本書，你會得到8％的折扣。如果您購買三份或更多，您可以享受所有優惠20％的折扣。
系統接受指定項目數量和書本ID的輸入，然後按Enter鍵。完成後，鍵入「結束」並按Enter鍵。
示例輸入：
端
輸出示例：一個人的
5份分開：$ 80.00祕境的
1複製：$ 40.00
總價格：$ 120.00
示例輸入2：
結束
輸出示例2：一個人的
2份分開：$ 36.80
總價格：$ 36.80
package pos;
import java.util.Scanner;
public class Pos {
public static void main(String[] args) {
System.out.print("Please enter the quantity along with a book book code (1,2, etc) "
+ "from the list.Please space you entry.\n ");
System.out.print("1.A man apart by author1 - Price: $ 20\n "
+ "2.Uncharted by author2 - Price: $ 40\n Quantity and Book Code:\n");
int bkprice1 = 20;
int bkprice2 = 40;
String book1 = "Hunger Games";
String book2 = "Clean Code by Robert C. Martin";
float Totalbk1 = 0;
float Totalbk2 = 0;
float Totalbk1L1 = 0;
float Totalbk2L1 = 0;
float Totalbk2L2 = 0;
float Totalbk3 = 0;
float Total;
float Disc;
try (Scanner in = new Scanner(System.in)) {
int qty = in.nextInt();
int code = in.nextInt();
int qty2 = in.nextInt();
int code2 = in.nextInt();
String tt = in.next();
int qty3;
if (qty == 2 && code == 1) {
Disc = (float) ((float) (qty*bkprice1)*(0.08));
Totalbk1 = (float) (qty*bkprice1) - Disc;
System.out.println(qty+" copies of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
} else if (qty > 2 && code == 1) {
Disc = (float) ((float) (qty*bkprice1)*(0.2));
Totalbk1 = (float) (qty*bkprice1) - Disc;
System.out.println(qty+" copies of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
} else if (qty <= 1 && code == 1) {
Totalbk1 = (float) (qty*bkprice1);
System.out.println(qty+" copy of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
}
if (qty2 == 2 && code2 == 1) {
Disc = (float) ((float) (qty2*bkprice1)*(0.08));
Totalbk1 = (float) (qty2*bkprice1) - Disc;
System.out.println(qty2+" copies of "+book1+": GHC "+Totalbk1);
Total = Totalbk1L1 + Totalbk1;
System.out.println("Total price: "+Total);
} else if (qty2 > 2 && code2 == 1) {
Disc = (float) ((float) (qty2*bkprice1)*(0.2));
Totalbk1 = (float) (qty2*bkprice1) - Disc;
System.out.println(qty2+" copies of "+book1+": GHC "+Totalbk1);
Total = Totalbk1L1 + Totalbk1;
System.out.println("Total price: "+Total);
} else if (qty2 <= 1 && code2 == 1) {
Totalbk1 = (float) (qty2*bkprice1);
System.out.println(qty2+" copy of "+book1+": GHC "+Totalbk1);
Total = Totalbk1L1 + Totalbk1;
System.out.println("Total price: "+Total);
}
if (qty == 2 && code == 2) {
Disc = (float) ((float) (qty*bkprice2)*(0.08));
Totalbk2 = (float) (qty*bkprice2) - Disc;
System.out.println(qty+" copies of "+book2+": GHC "+Totalbk2);
Totalbk2L1 = Totalbk2;
} else if (qty > 2 && code == 2) {
Disc = (float) ((float) (qty*bkprice2)*(0.2));
Totalbk2 = (float) (qty*bkprice2) - Disc;
System.out.println(qty+" copies of "+book2+": GHC "+Totalbk2);
Totalbk2L1 = Totalbk2;
} else if (qty <= 1 && code == 2) {
Totalbk2 = (float) (qty*bkprice2);
System.out.println(qty+" copy of "+book2+": GHC "+Totalbk2);
Totalbk2L1 = Totalbk2;
}
if (qty2 == 2 && code2 == 2) {
Disc = (float) ((float) (qty2*bkprice2)*(0.08));
Totalbk2 = (float) (qty2*bkprice2) - Disc;
System.out.println(qty2+" copies of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
} else if (qty2 > 2 && code2 == 2) {
Disc = (float) ((float) (qty2*bkprice2)*(0.2));
Totalbk2 = (float) (qty2*bkprice2) - Disc;
System.out.println(qty2+" copies of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
} else if (qty2 <= 1 && code2 == 2) {
Totalbk2 = (float) (qty2*bkprice2);
System.out.println(qty2+" copy of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
}
if (qty == 2 && code == 1) {
Disc = (float) ((float) (qty*bkprice1)*(0.08));
Totalbk1 = (float) (qty*bkprice1) - Disc;
System.out.println(qty+" copies of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
} else if (qty > 2 && code == 1) {
Disc = (float) ((float) (qty*bkprice1)*(0.2));
Totalbk1 = (float) (qty*bkprice1) - Disc;
System.out.println(qty+" copies of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
} else if (qty <= 1 && code == 1) {
Totalbk1 = (float) (qty*bkprice1);
System.out.println(qty+" copy of "+book1+": GHC "+Totalbk1);
Totalbk1L1 = Totalbk1;
}
if (qty2 == 2 && code2 == 2) {
Disc = (float) ((float) (qty2*bkprice2)*(0.08));
Totalbk2 = (float) (qty2*bkprice2) - Disc;
System.out.println(qty2+" copies of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
} else if (qty2 > 2 && code2 == 2) {
Disc = (float) ((float) (qty2*bkprice2)*(0.2));
Totalbk2 = (float) (qty2*bkprice2) - Disc;
System.out.println(qty2+" copies of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
} else if (qty2 <= 1 && code2 == 2) {
Totalbk2 = (float) (qty2*bkprice2);
System.out.println(qty2+" copy of "+book2+": GHC "+Totalbk2);
Total = Totalbk2L1 + Totalbk2;
System.out.println("Total price: "+Total);
}
}
}
}
請讓我知道，如果我的邏輯是正確的。我希望我的代碼儘可能簡潔。
作爲提醒，java約定是字段名稱應該以小寫字母開頭 – luiges90
您要求實現，但已經提供了可能的解決方案。那麼你的問題到底是什麼？ – home
你好，謝謝你的評論。當你運行這段代碼時，它不會生成期望的輸出。這是因爲我必須爲用戶輸入的所有可能性創建if語句。這會使代碼太多。我的問題是， 有一個更好的方法嗎？ –