Update ex15.7

fixed a logic error in ex15.7
nxdong · Jun 1, 2015 · d40ae9f · d40ae9f
1 parent 885b319
commit d40ae9f
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Showing 2 changed files with 8 additions and 3 deletions.
diff --git a/ch15/ex15.7/limit_quote.cpp b/ch15/ex15.7/limit_quote.cpp
@@ -1,3 +1,9 @@
 #include "limit_quote.h"
 
-
+double Limit_quote::net_price(std::size_t n) const
+{
+  if (n > max_qty)
+    return max_qty * price * discount + (n - max_qty) * price;
+  else
+    return n * discount *price;
+}
diff --git a/ch15/ex15.7/limit_quote.h b/ch15/ex15.7/limit_quote.h
@@ -10,8 +10,7 @@ class Limit_quote : public Quote
     Limit_quote(const std::string& b, double p, std::size_t max, double disc):
         Quote(b,p), max_qty(max), discount(disc)    {   }
 
-    double net_price(std::size_t n) const override
-    { return n * price * (n < max_qty ? 1 - discount : 1 ); }
+    double net_price(std::size_t n) const override;
 
 private:
     std::size_t max_qty     = 0;