Clarify C++ inheritance example method names for sum and product

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Co-authored-by: cfrontin <14077848+cfrontin@users.noreply.github.com>

Author: Copilot

cpp/syntax.cpp

@@ -127,8 +127,8 @@ int main() {
 
   Summer summer;            // Derived class from Operation.
   Multiplier multiplier;    // Another derived class from Operation.
-  std::cout << "summer result=" << summer.GetResult()
-            << ", multiplier result=" << multiplier.GetResult() << "\n\n";
+  std::cout << "summer sum=" << summer.GetSum()
+            << ", multiplier product=" << multiplier.GetProduct() << "\n\n";
 
   // TYPE ALIASES AND ENUMS
 

cpp/syntax.h

@@ -32,14 +32,14 @@ class Operation {
 class Summer : public Operation {
  public:
   Summer() : Operation(1.0, 2.0) {}
-  double GetResult() const { return x_ + y_; }
+  double GetSum() const { return x_ + y_; }
 };
 
 // This derived class demonstrates another implementation over same base.
 class Multiplier : public Operation {
  public:
   Multiplier() : Operation(3.0, 4.0) {}
-  double GetResult() const { return x_ * y_; }
+  double GetProduct() const { return x_ * y_; }
 };
 
 // This function is used to demonstrate function pointers.