種子論壇 | 高雄市資訊培育協會學員討論區

#include<iostream>
#include<cstdlib>
using namespace std;
int main()
{
restart:
system("cls"); //畫面清空
int p,q,sum=0,no; //p放商品代碼 q放商品數量 sum 金額加總的值 no確定結帳
cout<<"☆★☆智能玩具店☆★☆"<<endl;
cout<<endl;
cout<<"[商品價目表]"<<endl;
string a[7]= {"遙控器車",
"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 tmpQty[7]={0,0,0,0,0,0,0}; // 暫存購買商品的個數
for(int i=0;i<7;i++) //列出商品清單
{
cout<<"("<<i+1<<")"<<a[i]<<"\t"<<price[i]<<"元"<<endl;
}
cout<<"(8)結帳"<<endl;
cout<<endl;
re:
cout<<"請輸入商品代碼:";
cin>>p;
if(p>=1 && p<=7) //判斷選擇正確的商品 0~6
{
cout<<"數量:";
cin>>q; //輸入數量
if(q>0) //數量大於0
{
sum = sum + price[p-1]*q; //單價*購買數量
tmpQty[p-1] = tmpQty[p-1] + q; //計算各別商品總數量
goto re;
}else
{
cout<<"您輸入的數量有誤!!"<<endl;
goto re;
}
}else if(p==8) //結帳
{
goto checkout;
}else
{
cout<<"您輸入的代碼有誤"<<endl;
goto re;
}
checkout:
cout<<"[購物清單]"<<endl;
cout<<"-----------------------------"<<endl;
for(int i=0;i<7;i++)
{
if(tmpQty[i] != 0 ) //過濾清單是0 個的商品 != 不等於驚嘆號指的是反向結果
{
cout<<a[i]<<"\t"<<price[i]<<"元 * "<<tmpQty[i]<<" 個"<<endl;
}
}
cout<<"-----------------------------"<<endl<<endl;
cout<<"總共"<<sum<<"元"<<endl<<endl;
chose:
cout<<"1-正確無誤 2-重新選擇: ";
cin>>no;
if(no == 1)
{
goto pay; //支付金額
}else if(no == 2)
{
goto restart; //重新選擇商品
}else
{
cout<<"您輸入的編號有錯!!"<<endl; //選擇錯誤
goto chose;
}
int payMoney;
pay:
cout<<"請付帳:";
cin>>payMoney;
if( payMoney < sum) //支付金額小於總額
{
cout<<"您付的錢不夠，還差"<< sum- payMoney<<"元"<<endl;
goto pay;
}else
{
int money = payMoney-sum; //找錢的結果
cout<<"找您"<<money<<"元!"<<endl;
if(money >=500 )
{
cout<<"五佰元鈔票"<<money/500<<"張"<<endl;
money = money%500; //換完500後的剩餘金額
}
if(money >=100 )
{
cout<<"一佰元鈔票"<<money/100<<"張"<<endl;
money = money%100; //換完100後的剩餘金額
}
if(money >=50 )
{
cout<<"五十元硬幣"<<money/50<<"枚"<<endl;
money = money%50; //換完500後的剩餘金額
}
if(money >=10 )
{
cout<<"十元硬幣"<<money/10<<"枚"<<endl;
money = money%10; //換完500後的剩餘金額
}
if(money > 0 )
{
cout<<"一元硬幣"<<money<<"枚"<<endl;
}
}
system("pause");
return 0;
}

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