ex2_3.m

我们上课的资料

price=input('请输入商品价格:');
    switch fix(price/100) 
       case {0,1}
          rate=0;
       case {2,3,4}
          rate=3/100;
       case num2cell(5:9)
          rate=5/100;
       case num2cell(10:24)
          rate=8/100;
       case num2cell(25:49)
          rate=10/100;
       otherwise
          rate=14/100;
    end
    price=price*(1-rate)