Object Oriented Programming Examples

C++ Version

# Constructor 


#include <bits/stdc++.h>
using namespace std;
class timer
{
    int n,i,j;
    clock_t start,end;
public:
    timer();

};
timer::timer()
{
    start=clock();
    for(i=1;i<=10000;i++)
    {
        cout<<i<<endl;
    }
    end=clock();
    cout<<endl;
    cout<<"Time="<<(double)(end-start)/CLOCKS_PER_SEC<<" Seconds"<<endl;
}
int main()
{
    timer ob;
    return 0;

}

#Constructor With Parameter

#include <bits/stdc++.h>

using namespace std;

class gcd

{

 int x,y,r,z;

public:

    gcd(int a,int b);

};

gcd::gcd(int a,int b)

{

    x=a;

    y=b;

    while(y!=0)

    {

        r=x%y;

        x=y;

        y=r;

    }

    cout<<x<<endl;

}

int main()

{

    int p,q;

    cin>>p>>q;

    gcd ob(p,q);

}

# Inheritence

#include <bits/stdc++.h>

using namespace std;

class gcd

{

 int x,y,r,z;

public:

    int gcdx(int a,int b);

};

int gcd::gcdx(int a,int b)

{

    x=a;

    y=b;

    while(y!=0)

    {

        r=x%y;

        x=y;

        y=r;

    }

  return x;

}

class myclass:public gcd

{

    int v,p,mul;

public:

    int lcm(int w,int u);

};

int myclass::lcm(int w,int u)

{

    v=w;

    p=u;

    mul=v*p;

    return (mul/gcdx(v,p));

}

int main()

{

    int m1,m2,i,j,k;

    cin>>m1>>m2;

    myclass ob;

    cout<<"lcm="<<ob.lcm(m1,m2)<<endl;

}

JAVA VERSION

Constructor

(1st class)

package constructor;
import java.util.*;
public class Constructor {

    
    public static void main(String[] args) {
        // TODO code application logic here
        int p,q;
        Scanner input=new Scanner(System.in);
        p=input.nextInt();
        q=input.nextInt();
        gcd ob=new gcd(p,q);
        
    }
    

}

(2nd class)

package constructor;
public class gcd {
    int x,y,r,z;
    gcd(int a, int b)
    {
        x=a;
        y=b;
        while(y!=0)
        {

            r=x%y;
            x=y;
            y=r;

        }
        System.out.println("GCD= "+x);
    }
    

}

Inheritence

1st class

package inheritence;

import java.util.*;
public class Inheritence {

 
    public static void main(String[] args) {
        // TODO code application logic here
        int m1,m2;
        Scanner input=new Scanner(System.in);
        m1=input.nextInt();
        m2=input.nextInt();
        myclass ob=new myclass();
        System.out.println("lcm="+ob.lcm(m1, m2));
    }
    
    
}

(Base Class)

package inheritence;

public class gcd {
    int x,y,r,z;
   int gcdx(int a, int b)
    {
        x=a;
        y=b;
        while(y!=0)
        {

            r=x%y;
            x=y;
            y=r;

        }
        return x;
    }
    

}

(Derived Class)

package inheritence;

public class myclass extends gcd {

    int v,p,mul;

    int lcm (int w,int u)

    {

        v=w;

        p=u;

        mul=v*p;

        

        return (mul/gcdx(v,p));

    }

}

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About Ashadullah Shawon

I am Ashadullah Shawon. I am a Software Engineer. I studied Computer Science and Engineering (CSE) at RUET. I Like To Share Knowledge. Learn More: Click Here