Constructors in C++ Part – 1

Program 1

// Constructor in CPP
#include<iostream>
using namespace std;
class Test
{
     private:
     int a,b,c;
     public:
     Test(int x,int y)   // parameterized   constructor 
     {
          a=x;
          b=y;
         cout<<"\nI am constructor\n";
         
     }
    void add();
};
void Test::add()
{
    c=a+b;
    cout<<c<<endl;
}

int main()
{
    system("cls");
     int a,b;
     cout<<"Enter two number";
     cin>>a>>b;
    Test T1(a,b);  // argument 
    Test T2(500,500); // argument 
     T1.add();
     T2.add();

    return 0;
}

Program 2

// Constructor in CPP
#include<iostream>
using namespace std;
class Test
{
     private:
       int a,b,c;   
     public:
     Test(int x=50,int y,int z=100)   // 3 parameter
     {
          a=x;
          b=y;
          c=z;
     }
     void display()
     {
        cout<<"a="<<a<<endl;
        cout<<"b="<<b<<endl;
        cout<<"c="<<c<<endl;
     }
}; 
int main()
{
    system("cls");
     Test T1(200);  // 2 argument
      T1.display();
    return 0;
}