CONSTRUCTORS

class student

 {

  private:

             int rollno;

            char name[20];

            float marks;

 public:

            student( )                          // Default Constructor

            { rollno=0; marks=0.0; }

            student(int roll, char nam[20], float mar)   // Parametrized Constructor

            { rollno=roll;

            strcpy(name, nam);

            marks =mar;

            }          

student( student & s)   // Copy Constructor

            { rollno= s.rollno;

            strcpy(name, s.name);

            marks =s.marks;

            }

}

void main()

{

student s1; //statement1

student s2( 1, “RAJESH”, 450); // statemet2

student s3(s2);    //statement3

student s4(2, “MOHIT”,320); //statement4

Student s5=s4;      //statement5

}

Explanation:

Statement1: default constructor is called

Statement2: parametrized constructor is called

Statement 3: copy constructor is called

statement4: Parametrized constructor is called

statement5: Copy constructor is called