Parameterized constructors:

PARAMETERIZED CONSTRUCTORS:

Constructors that take parameters are called as parameterized constructors. It is important to notice that if the parameterized constructor is provided then the compiler will not provide a default constructor.  In such cases, the following statement will not compile.

Distance d1;   // Distance is a class

To make such statements run, the programmer has to explicitly provide a zero argument constructor.

EXAMPLE:

class F

{

int a,b;

public:

F(int x, int y);

void put();

};

F :: F(int x, int y)

{

a=x;

b=y;

}

void F :: put()

{

cout<<”a=”<<a<<endl;

cout<<”b=”<<b;

}

void main()

{

F  obj(5, 9);              //constructor with two arguments will be called

obj.put();

F obj =F(8, 10);

obj.put();

}

types of constructors