Program for Constructor in C++

 Program for Constructor in C++:

#include<iostream>

using namespace std;

class alpha 

{

int x;

public:

alpha(int i)  //constructor 

{

x=i;

cout<<"alpha initialized\n";

}

void showx()

{

cout<<"x="<<x<<endl;

}

};

class beta

{

float y;

public:

beta(float b)

{

y=b;

cout<<"Beta initialized\n";

}

void showy()

{

cout<<"y="<<y<<endl;

}

};

class gamma:public alpha,public beta

{

int m,n;

public:

gamma(int a,float b,int c,int d):alpha(a),beta(b)

{

m=c;

n=d;

cout<<"Gamma initialized\n";

}

void showmn()

{

cout<<"M="<<m<<endl;

cout<<"N="<<n<<endl;

}

};

int main()

{

gamma g(5,30.3,23,12);

cout<<"\n";

g.showx();

g.showy();

g.showmn();

}

Output:

alpha initialized

Beta initialized

Gamma initialized

x=5

y=30.3

M=23

N=12