Introduction
- Constructors can be overloaded just like the member functions.
- It is used to increase the flexibility of a class by having number of constructor for a single class.
Example : Program demonstrating the Constructor Overloading
#include <iostream>
using namespace std;
class OverloadConst
{
public:
int a;
int b;
OverloadConst()
{
a = b = 0;
}
OverloadConst(int c)
{
a = b = c;
}
OverloadConst(int a1, int b1)
{
a = a1;
b = b1;
}
};
int main()
{
OverloadConst obj;
OverloadConst obj1(10);
OverloadConst obj2(20, 30);
cout << "OverloadConst obj's a & b value : " <<
obj.a << " , "<< obj.b << "\n";
cout << "OverloadConst obj1's a & b value : "<<
obj1.a << " ,"<< obj1.b << "\n";
cout << "OverloadConst obj2's a & b value : "<<
obj2.a << " , "<< obj2.b << "\n";
return 0;
}
Output:
OverloadConst obj's a & b value : 0 , 0
OverloadConst obj1's a & b value : 10 ,10
OverloadConst obj2's a & b value : 20 , 30
In the above example, the constructor OverloadConst is overloaded thrice with different initialized values.
