4th sem OOPC Write the following programs using CONSTRUCTOR & DESTRUCTOR in CPP language.

1.      To enter two operands using constructor and perform arithmetic operations (+,-,*, /) on them and display the results.

#include<iostream>
#include<conio.h>
using namespace std;
class operation
{
    public:
    int a,b;
    operation(int x,int y)
    {
        a=x;
        b=y;
        cout<< a<< "+" << b <<"="<< a+b<<"\n";
        cout<<a << "-"<<b<<"="<<a-b<<"\n";
        cout<<a<<"*"<<b<<"="<<a*b<<"\n";
        cout<<a<<"/"<<b<<"="<<a/b<<"\n";
    }
};
int main()
{
    int m,n;
    cout <<"enter the values of oprands "<<endl;
    cin>>m>>n;
    operation(m,n);
    return 0;
}

2.      Write a program to generate a Fibonacci series using copy constructor. The range of the series should be user defined.

#include<iostream>
#include<conio.h>
using namespace std;
class code{
    int id;
public:
    code(){}
    code(int a){id =a;}
    code(code &x){
        id=x.id;
    }
    void display(){
        cout<< id;
    }
};
int main(){
    code A(100);
    code B(A);
    code D;
    D=A;
    cout<<"\n id of A:";A.display();
    cout<<"\n id of D:";D.display();
    cout<<"\n id of B:";B.display();
    return 0;
}

3.      To find biggest three numbers using friend function.

#include<iostream>
using namespace std;
class maximum{
    int a,b,c;
    public:
    maximum(){}
    maximum(int x,int y,int z){
    a=x;
    b=y;
    c=z;
    }
friend int sum(maximum);

};
int sum(maximum l){
if(l.a>l.b){
    if(l.a>l.c){
        return (l.a);
    }else{
        return (l.c);
    }
}else{
    if(l.b>l.c){
        return (l.b);
    }else{
        return (l.c);
    }
}
}

int main(){
    int m,n,o;
    cout<<"Enter the digit"<<endl;
    cin>>m>>n>>o;
    maximum A(m,n,o);
    cout<<"maximum is : "<<sum(A);

    return 0;
}



 4.      Write a program to find the sum of two numbers and display it using a friend function to a class.

#include<iostream>
using namespace std;
class sum{
    int a,b;
    public:
    sum(){}
    sum(int x,int y){
    a=x;
    b=y;
}
friend int addition(sum);
};
int addition(sum l){
return(l.a+l.b);
}
int main(){
    int m,n;
    cout<<"Enter the Two number"<<endl;
    cin>>m>>n;
    sum A(m,n);
    cout<<addition(A);
}