ccplusplus.com: facade pattern example

Saturday, December 24, 2011

facade pattern example

/*******************************************************************
 * File         :   facade-pattern.cpp
 * Author       :   Saurabh Gupta
 * Description  :   facade pattern example in c++
 * Date         :   AM 09:30 24 December 2011
 * Source       :   http://www.ccplusplus.com/2011/07/design-pattern-guide-with-example-and.html
 * Note         :   
 ******************************************************************/
#include <string>
#include <iostream>

class CHelloWorld {
    public:
        virtual ~CHelloWorld() { 
        }
        virtual std::string m_hello()=0;
        virtual std::string m_world()=0;
        virtual void m_output(const std::string&)=0;
        virtual void endl()=0;
};

class FacadePattern : public CHelloWorld {
    public:
        std::string m_hello() { 
            return "Hello"; 
        }
        std::string m_world() { 
            return "world"; 
        }
        void m_output(const std::string & str){
            std::cout << str;
        }
        void endl(){
            std::cout << std::endl;
        }
};

void displayHelloWorld(CHelloWorld & hw) {
 hw.m_output(hw.m_hello());
 hw.m_output(" ");
 hw.m_output(hw.m_world());
 hw.m_output("!");
 hw.endl();
}

int main() {
 FacadePattern hw;
 displayHelloWorld(hw);
 return 0;
}
/*
 *
 *
 [sgupta@rhel6x64 facade]$ c++ facade-pattern.cpp -o facade-pattern
 [sgupta@rhel6x64 facade]$ ./facade-pattern
 Hello world!
 [sgupta@rhel6x64 facade]$ 
 */

2 comments:

UnknownJune 22, 2013 at 7:37 AM
can u recheck ... in my understand ing facade pattern should use objects of subclasses ... but you are using inheritance , pls check and correct me If I am wrong
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