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  1. #include<iostream>
  2. using namespace std;
  3.  
  4. int main(void)
  5. {
  6.     char st;
  7.     char ch='y';
  8.     int pay,a,b,c,d,e,f,g,h,i,j,k;
  9.     int total = 0;
  10.     float z;
  11.     do
  12.     {
  13.         cout<<"買";
  14.         cin>>z;
  15.         if(z>=900)
  16.             z=z*0.8;
  17.         else if (z>=500)
  18.             z=z*0.9;
  19.         else
  20.             z=z*0.95;
  21.  
  22.         total = total + z;
  23.  
  24.         cout<<"繼續??(y/n)";
  25.         cin>>ch;
  26.     }
  27.     while(ch=='y');
  28.  
  29.     cout<<"應付金額"<<z<<endl;
  30.     cout<<"付";
  31.     cin>>pay;
  32.     a=pay-total;
  33.     if (a<0)
  34.         cout<<"錯誤 \n";
  35.     else
  36.     {
  37.         b=a/500;
  38.         c=a%500;
  39.         d=c/100;
  40.         e=c%100;
  41.         f=e/50;
  42.         g=e%50;
  43.         h=g/10;
  44.         i=g%10;
  45.         j=i/5;
  46.         k=i%5;
  47.         cout<<"找零="<<a<<endl;
  48.         cout<<"500*"<<b<<endl<<"100*"<<d<<endl<<"50*"<<f<<endl<<"10*"<<h<<endl
  49.             <<"5*"<<j<<endl<<"1*"<<k<<endl;
  50.     }
  51.     cin>>st;
  52. }
  53.  
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https://ideone.com/fgSLQ
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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