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C++ Program to implement Constructor Overloading – Q13

January 13, 2010 Leave a comment

Q13. Program to implement Constructor Overloading:

Implement the concept of Constructor Overloading with the help of not less than three different constructors within any class of your choice.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>
#include <string.h>

class Cperson{
	private:
		char name[20];
	public:
		Cperson(){
			cout<<"\n Constructor Called."<<endl;
			strcpy(name, "Manoj");
			}
		Cperson(char *str){
			strcpy(name, str);
			}
		Cperson(Cperson &per){
			strcpy(name, per.name);
			}
		void Show_Name(){
			cout<<name;
			}
	};

void main(){
	clrscr();

	Cperson Op1;
	Cperson Op2("Pandey");
	Cperson Op3(Op2);

	cout<<"\n Op1: ";
	Op1.Show_Name();

	cout<<"\n Op2: ";
	Op2.Show_Name();

	cout<<"\n Op3: ";
	Op3.Show_Name();

	getch();
	}

 

Output:

Constructor Called.

Op1: Manoj
Op2: Pandey
Op3: Pandey


Java Program to show Overloading Constructors – Q21

January 11, 2009 Leave a comment

Q21: Java Program to show overloading constructors

Constructors are used to create instances of an object and can be overloaded by creating more than one Constructor in a class with same name but having different signatures.

class Emp_class{
	private String name;
	private int salary;
	
	public Emp_class(){
		name = "Manoj Pandey";
		salary = 10500;
	}
	
	public Emp_class(String n, int s){
		name = n;
		salary = s;
	}
	
	public Emp_class(Emp_class Oemp){
		name = Oemp.name;
		salary = Oemp.salary;
	}
	
	public void show(){
		System.out.println("\n Name: " + name);
		System.out.println(" Salary: " + salary);
	}
}

class ctor_ovld{
	public static void main(String args[]){
		Emp_class Oe1 = new Emp_class();
		Oe1.show();
		
		Emp_class Oe2 = new Emp_class("Nitin", 25050);
		Oe2.show();
		
		Emp_class Oe3 = new Emp_class("Bhuwanesh", 30050);
		Oe3.show();

		Emp_class Oe4 = Oe2;
		Oe4.show();
	}
}

… from College notes (BCA/MCA assignments):