Simple Inheritance Base Class Private Member Example Program in C++

Simple Example Program With Inheritance Base Class Private Member

// Header Files
#include<iostream>

#include<stdio.h>
#include<conio.h>

using namespace std;

class Employee {
    int eno;
    char name[20], des[20];	
    // Private members cannot call from outside class.
public:
    void getEmpDetails() {
        cout << "\nEnter the Employee number:";
        cin>>eno;
        cout << "Enter the Employee name:";
        cin>>name;
        cout << "Enter the Employee designation:";
        cin>>des;
    }
    
    void employee_display() {
    	cout <<"\nEmployee number:"<<eno;
		cout <<"\nEmployee name:"<<name;
		cout <<"\nEmployee designation:"<<des;
    }
};

class Salary : public Employee {
	//We cannot use Employee Base Class Private Members
    float bp, hra, da, pf, np;
public:

    void getPayDetails() {
        cout << "Enter the Basic pay:";
        cin>>bp;
        cout << "Enter the Humen Resource Allowance:";
        cin>>hra;
        cout << "Enter the Dearness Allowance :";
        cin>>da;
        cout << "Enter the Profitablity Fund:";
        cin>>pf;
    }

    void calculate() {
        np = bp + hra + da - pf;
    }

    void display() {
    	employee_display();
    	cout <<"\nEmployee Basic pay:"<<bp;
		cout <<"\nEmployee Humen Resource Allowance:"<<hra;
		cout <<"\nEmployee Dearness Allowance:"<<da;
		cout <<"\nEmployee Profitablity Fund:"<<pf;
		cout <<"\nEmployee Net Pay:"<<np<<endl;
    }
};

int main() {
    int i, n;
    char ch;
    Salary s[10];
    cout << "Simple Inheritance Base Class Private Member : Payroll System \n";
    cout << "Enter the number of employee:";
    cin>>n;
    for (i = 0; i < n; i++) {
    	cout << "\nEmployee Details # "<<(i+1)<<" : ";
        s[i].getEmpDetails();
        s[i].getPayDetails();
        s[i].calculate();
    }

    for (i = 0; i < n; i++) {
        s[i].display();
    }
    getch();
    
    return 0;
}

Sample Output

Simple Inheritance Base Class Private Member : Payroll System

Enter the number of employee:2

Employee Details # 1 :
Enter the Employee number:1
Enter the Employee name:BALU
Enter the Employee designation:SE
Enter the Basic pay:10000
Enter the Humen Resource Allowance:1000
Enter the Dearness Allowance :500
Enter the Profitablity Fund:600

Employee Details # 2 :
Enter the Employee number:2
Enter the Employee name:SUMESH
Enter the Employee designation:SX
Enter the Basic pay:12000
Enter the Humen Resource Allowance:1100
Enter the Dearness Allowance :600
Enter the Profitablity Fund:600

Employee number:1
Employee name:BALU
Employee designation:SE
Employee Basic pay:10000
Employee Humen Resource Allowance:1000
Employee Dearness Allowance:500
Employee Profitablity Fund:600
Employee Net Pay:10900

Employee number:2
Employee name:SUMESH
Employee designation:SX
Employee Basic pay:12000
Employee Humen Resource Allowance:1100
Employee Dearness Allowance:600
Employee Profitablity Fund:600
Employee Net Pay:13100
--------------------------------
Process exited after 105.4 seconds with return value 0
Press any key to continue . . .

How It Works

This C++ program demonstrates Simple Inheritance Base Class Private Member. It first reads the required values as input, then walks through the data with a loop to compute the result, and finally prints the output shown in the Sample Output above.

1. Declare the variables that hold the program’s data.
2. Read the input values that the program will work with.
3. Iterate over the data using a loop to apply the logic.
4. Print the final result to the console so you can compare it with the sample output.

Try changing the input values and re-running the program to see how the output changes — this is the fastest way to understand how the logic behaves.

Related Pages

Continue learning with these related tutorials and programs:

• OOP Programs — Browse all OOP Programs.
• Understanding Inheritance in C++ — Tutorial — single, multilevel and hierarchical inheritance.
• Simple Inheritance Private Base Class Example Program — More in inheritance in c programs.
• Simple Multi Level Inheritance Example Program — More in inheritance in c programs.