Default Constructor in C++

In this blog we are learning about constructor in C++ || Code with abuzar 

What is Default Constructor ?

What is Default constructor default constructor is a type of constructor which do not pass any type of parameters or arguments .

Constructors are functions of a class that are executed when new objects of the class are created. The constructors have the same name as the class and no return type, not even void. They are primarily useful for providing initial values for variables of the class. The two main types of constructors are default constructors and parameterized constructors. 

Example 

#include <iostream>
using namespace std;
class Demo {
   private:
   int num1, num2 ;
   public:
   Demo() {
      num1 = 10;
      num2 = 20;
   }
   void display() {
      cout<<"num1 = "<< num1 <<endl;
      cout<<"num2 = "<< num2 <<endl;
   }
};
int main() {
   Demo obj;
   obj.display();
   return 0;
}

Output :

num1 = 10
num2 = 20

In this above program , we are declaring the default parameter which can not pass any type of parameter o augments.

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