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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.     float z;
  10.     do
  11.     {
  12.         cout<<"買";
  13.         cin>>z;
  14.         if(z>=900)
  15.             z=z*0.8;
  16.         else if (z>=500)
  17.             z=z*0.9;
  18.         else
  19.             z=z*0.95;
  20.  
  21.         cout<<"應付金額"<<z<<endl;
  22.         cout<<"付";
  23.         cin>>pay;
  24.         a=pay-z;
  25.         if (a<0)
  26.             cout<<"錯誤 \n";
  27.         else
  28.         {
  29.             b=a/500;
  30.             c=a%500;
  31.             d=c/100;
  32.             e=c%100;
  33.             f=e/50;
  34.             g=e%50;
  35.             h=g/10;
  36.             i=g%10;
  37.             j=i/5;
  38.             k=i%5;
  39.             cout<<"找零="<<a<<endl;
  40.             cout<<"500*"<<b<<endl<<"100*"<<d<<endl<<"50*"<<f<<endl<<"10*"<<h<<endl
  41.                 <<"5*"<<j<<endl<<"1*"<<k<<endl;
  42.         }
  43.  
  44.         cout<<"繼續??(y/n)";
  45.         cin>>ch;
  46.     }
  47.     while(ch=='y');
  48. }
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https://ideone.com/o1cxH
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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