本帖最後由 tonyh 於 2015-3-28 12:06 編輯
新增 "1-正確無誤 2-重新選購" 的選單,
讓使用者在準備結帳時還能反悔, 譬如錢帶不夠.
確定結帳後, 銜接自動找零系統.
- #include<iostream>
- #include<cstdlib>
- using namespace std;
- int main()
- {
- re2:
- int p,q,sum=0,option,pay,money;
- string name[7]={"遙控汽車","飛機模型","足球 ",
- "拼圖 ","玩具槍 ","可愛玩偶","籃球 "};
- int price[7]={450,550,325,200,660,150,380};
- int qty[7]={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;
- re:
- 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;
- if(q<=0)
- {
- cout<<"輸入錯誤!"<<endl;
- goto re;
- }
- sum+=price[p-1]*q;
- qty[p-1]+=q;
- }
- else
- {
- cout<<"輸入錯誤!"<<endl;
- }
- 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;
- cout<<"1-正確無誤 2-重新選購 ";
- cin>>option;
- if(option==1)
- {
- goto change;
- }
- else
- {
- system("cls"); //清畫面
- goto re2;
- }
- change:
- cout<<endl<<"請付帳: ";
- cin>>pay;
- money=pay-sum;
- if(money==0)
- {
- cout<<"錢剛好!"<<endl;
- }
- else if(money<0)
- {
- cout<<"錢不夠!還差"<<-money<<"元!"<<endl;
- goto change;
- }else
- {
- cout<<"找您"<<money<<"元!"<<endl;
- if(money>=1000)
- {
- cout<<"一千元鈔票"<<money/1000<<"張"<<endl;
- money%=1000;
- }
- if(money>=500)
- {
- cout<<"五百元鈔票"<<money/500<<"張"<<endl;
- money%=500;
- }
- if(money>=100)
- {
- cout<<"一百元鈔票"<<money/100<<"張"<<endl;
- money%=100;
- }
- if(money>=50)
- {
- cout<<"五十元硬幣"<<money/50<<"枚"<<endl;
- money%=50;
- }
- if(money>=10)
- {
- cout<<"十元硬幣"<<money/10<<"枚"<<endl;
- money%=10;
- }
- if(money>=5)
- {
- cout<<"五元硬幣"<<money/5<<"枚"<<endl;
- money%=5;
- }
- if(money>0)
- {
- cout<<"一元硬幣"<<money<<"枚"<<endl;
- }
- }
- cout<<endl<<"銘謝惠顧!"<<endl;
- system("pause");
- return 0;
- }
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