本帖最後由 李泳霖 於 2024-8-10 15:31 編輯
新增 "購物清單" 功能，使結帳時能不只計算出價錢，還能列出細目。
參考執行畫面如下：
 - #include<iostream>
- #include<cstdlib>
- using namespace std;
- int main()
- {
- re:
- system("cls");
- int p,q,sum=0;
- string name[]={"遙控汽車","飛機模型","足球 ","拼圖 ","玩具槍 ","可愛玩偶","籃球 "};
- int price[]={450,550,325,200,660,150,380};
- int qty[]={0,0,0,0,0,0,0};
- cout<<"☆★☆智能玩具店☆★☆"<<endl<<endl;
- cout<<"[商品價目表]"<<endl;
- for(int i=0; i<7; i++)
- cout<<"("<<i+1<<")"<<name[i]<<"\t"<<price[i]<<"元"<<endl;
- cout<<"(8)結帳"<<endl<<endl;
- re2:
- cout<<"請輸入商品代碼: ";
- cin>>p;
- if(p==8)
- {
- goto checkout;
- }else if(p>=1 && p<=7)
- {
- cout<<"數量: ";
- cin>>q;
- sum+=price[p-1]*q;
- qty[p-1]+=q;
- goto re2;
- }else
- {
- goto re;
- }
- checkout:
- cout<<endl<<"[購物清單]"<<endl;
- cout<<"-----------------------------"<<endl;
- for(int i=0; i<7; i++)
- {
- if(qty[i]!=0)
- cout<<name[i]<<"\t"<<price[i]<<"元 * "<<qty[i]<<"個"<<endl;
- }
- cout<<"-----------------------------"<<endl;
- cout<<"總共"<<sum<<"元!"<<endl<<endl;
- system("pause");
- goto re;
- return 0;
- }
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