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...



*/

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(C++) BaseClassExample1

Technical facts

Qt project file: ./CppBaseClassExample1/CppBaseClassExample1.pro

./CppBaseClassExample1/main.cpp