Parameterized Constructor in C++ || Code with abuzar

 We are learning about parameterized constructor in C++ 

What is Parameterized  Constructor ? 

In Object oriented programming constructor is a special type of function . but what is Parameterized  constructor ? Parameterized , Constructor that can take at least one argument are termed as Parameterized constructor .  

When an object is declared in a  Parameterized constructor , the initial value have to be passed as the argument to the constructor function . The normal way of object deceleration may not be worked  .  The constructor is also invoked implicit and explicit . 

Some Important characteristic of constructor are - 

• Constructor is automatically called when it's object is created .
• Constructor does not have return type .
• Constructor has same name type itself .

Examples :-

#include <iostream> class Line {  public:  void setLength( double len );  double getLength( void );  Line(double len); // This is the constructor  private:  double length; }; // Member functions definitions including constructor Line::Line( double len) {  cout << "Object is being created, length = " << len << endl;  length = len; } void Line::setLength( double len ) {  length = len; } double Line::getLength( void ) {  return length; } // Main function for the program void main( ) {  Line line(10.0);  // get initially set length.  cout << "Length of line : " << line.getLength() <<endl;  // set line length again  line.setLength(6.0);  cout << "Length of line : " << line.getLength() <<endl;  getch(); }

Output :

Object is being created, length = 10
Length of line : 10
Length of line : 6

RELATED ARTICLES :

• Constructor in C++ 
• Inline function in C++ 
• Encapsulation in C++ 
• Data abstraction in C++ 
• Object and Classes in C++ 

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This article is contributed by Mohd Abuzar . If you like code with abuzar or want to contribute with us so please mail at - abuzar.abuzar.mohd325@gmail.com