simple program using function overriding and virtual function (OOP) (76)

#include<iostream>

using namespace std;

class Employee //here i make the base class name Employee 

{

protected:

string name;

int number;

public:

Employee() //here i make a default constructor

{

name="";

number=0;

}

virtual void info(string x,int y) //here i make a function for overriding 

{

name=x;

number=y;

cout<<"the name of the employee is:"<<name<<endl;

cout<<"the number of the employee is:"<<number<<endl;

}

virtual void salary(double x) //here i make a function for overriding 

{

double s;

s=x;

cout<<"salary of the employee is:"<<s<<endl;

}

};

class Manager:public Employee //here i make a child class name Manager

{

private:

string manager_address,manager_education;

int manager_age;

public:

void info(string x,int y) //here function overriding

{

name=x;

number=y;

cout<<"the name of the manager is:"<<name<<endl;

cout<<"the number of the manager is:"<<number<<endl;

}

void salary(double x) //here function overriding

{

double s;

s=x;

cout<<"salary of the manager is:"<<s<<endl;

}

void getmanagerInfo(string x,string y,int z) //function that get information

{

manager_address=x;

manager_education=y;

manager_age=z;

}

void setmanagerInfo() //function that set information

{

cout<<"the address of the manager is:"<<manager_address<<endl;

cout<<"the education of the manager is:"<<manager_education<<endl;

cout<<"the age of the manager is:"<<manager_age<<endl;

}

};

class scientist:public Employee //here i make a child class name scientist

{

private:

string scientist_address,scientist_education;

int scientist_age;

public:

void info(string x,int y) //here function overriding

{

name=x;

number=y;

cout<<"the name of the scientist is:"<<name<<endl;

cout<<"the number of the scientist is:"<<number<<endl;

}

void salary(double x) //here function overriding

{

double s;

s=x;

cout<<"salary of the scientist is:"<<s<<endl;

}

void getscientistInfo(string x,string y,int z) //function that get information

{

scientist_address=x;

scientist_education=y;

scientist_age=z;

}

void setscientistInfo() //function that set information

{

cout<<"the address of the scientist is:"<<scientist_address<<endl;

cout<<"the education of the scientist is:"<<scientist_education<<endl;

cout<<"the age of the scientist is:"<<scientist_age<<endl;

}

};

class laborer:public Employee //here i make a child class name laborer

{

private:

string  laborer_address;

int laborer_age;

public:

void info(string x,int y) //here function overriding

{

name=x;

number=y;

cout<<"the name of the  laborer is:"<<name<<endl;

cout<<"the number of the  laborer is:"<<number<<endl;

}

void salary(double x) //here function overriding

{

double s;

s=x;

cout<<"salary of the  laborer is:"<<s<<endl;

}

void getlaborerInfo(string x,int z) //function that get information

{

laborer_address=x;

laborer_age=z;

}

void setlaborerInfo() //function that set information

{

cout<<"the address of the  laborer is:"<< laborer_address<<endl;

cout<<"the age of the  laborer is:"<< laborer_age<<endl;

}

};

int main()

{

Employee obj1;

Employee *ptr;

Manager obj2;

scientist obj3;

laborer obj4;

cout<<"\t\t\tEmployee class..."<<endl;

cout<<endl;

obj1.info("hamza",18);

obj1.salary(45000);

cout<<"\t\t\tmanager  class..."<<endl;

cout<<endl;

ptr=&obj2;

ptr->info("hassan",5017);

ptr->salary(30000);

obj2.getmanagerInfo("isa-khel","BSCS",25);

obj2.setmanagerInfo();

cout<<"\t\t\tscientist  class..."<<endl;

cout<<endl;

ptr=&obj3;

ptr->info("hammad",4718);

ptr->salary(40000);

obj3.getscientistInfo("mainwali","BSse",17);

obj3.setscientistInfo();

cout<<"\t\t\tlaborer  class..."<<endl;

cout<<endl;

ptr=&obj4;

ptr->info("hamza-rehman",4718);

ptr->salary(600000);

obj4.getlaborerInfo("mainwali",30);

obj4.setlaborerInfo();

}