Using Default Values for object - C++ Class

C++ examples for Class:Constructor

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Description

Using Default Values for object

Demo Code

                                                                
#include <iostream> 
                                                                 
class Rectangle /*from  w w  w .  ja va2s .c o  m*/
{ 
public: 
   Rectangle(int width, int height); 
    ~Rectangle(){} 
    void drawShape(int aWidth, int aHeight,  
          bool useCurrentValue = false) const; 
private: 
    int width; 
    int height; 
}; 
                                                                   
Rectangle::Rectangle(int aWidth, int aHeight) 
{ 
    width = aWidth; 
    height = aHeight; 
} 
void Rectangle::drawShape( 
    int aWidth, 
    int aHeight, 
    bool useCurrentValue 
) const 
{ 
    int printWidth; 
    int printHeight; 
                                                                   
    if (useCurrentValue == true) 
    { 
           printWidth = width; 
           printHeight = height; 
    } 
    else 
    { 
           printWidth = aWidth; 
           printHeight = aHeight; 
    } 
                                                                   
    for (int i = 0; i < printHeight; i++) 
    { 
           for (int j = 0; j < printWidth; j++) 
                std::cout << "*"; 
           std::cout << std::endl; 
    } 
} 
                                                                   
int main() 
{ 
    Rectangle box(20, 5); 
    std::cout << "drawShape(0, 0, true) ..." << std::endl; 
    box.drawShape(0, 0, true); 
    std::cout <<"drawShape(25, 4) ..." << std::endl; 
    box.drawShape(25, 4); 
    return 0; 
}

Result


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