(C++) BaseClassExample1

base class example 1 is an example of using a base class.

Technical facts

Operating system(s) or programming environment(s)

• Lubuntu 15.04 (vivid)

IDE(s):

• Qt Creator 3.1.1

Project type:

• Console application

C++ standard:

• C++98

Compiler(s):

• G++ 4.9.2

Libraries used:

• STL: GNU ISO C++ Library, version 4.9.2

 

 

 

 

 

Qt project file: ./CppBaseClassExample1/CppBaseClassExample1.pro

 

---

include(../../ConsoleApplication.pri) #Or use the code below # QT += core # QT += gui # greaterThan(QT_MAJOR_VERSION, 4): QT += widgets # CONFIG   += console # CONFIG   -= app_bundle # TEMPLATE = app # CONFIG(release, debug|release) { #   DEFINES += NDEBUG NTRACE_BILDERBIKKEL # } # QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++ # unix { #   QMAKE_CXXFLAGS += -Werror # } SOURCES += main.cpp

 

 

 

 

 

./CppBaseClassExample1/main.cpp

 

---

#include <iostream> struct Animal {   virtual ~Animal() {}   virtual void MakeSound() const = 0; }; struct Cat : public Animal {   void MakeSound() const { std::cout << "Meow" << std::endl; } }; struct Dog : public Animal {   void MakeSound() const { std::cout << "Bark" << std::endl; } }; int main() {   const Cat c;   c.MakeSound();   const Dog d;   d.MakeSound(); } /* Screen output: Meow Bark Press <RETURN> to close this window... */