Simple Program for Single Inheritance Using C++ Programming

Inheritance Definition:

Inheritance is the concept in which a class derives the characters of another class similar to a child deriving character from his/her parents.

• Understanding Inheritance and Its Types In C++

To write a program to find out the payroll system using single inheritance.

Single Inheritance Definition

Single inheritance is straightforward to learn.  A class extends (inherit) another only one class, Its called single inheritance. One subclass is allowed to inherit by only one base class. It provides a derived class to inherit all properties and all behavior of a base class.

Simple Program for Single Inheritance Algorithm/Steps:

• Step 1: Start the program.
• Step 2: Declare the base class emp.
• Step 3: Define and declare the function get() to get the employee details.
• Step 4: Declare the derived class salary.
• Step 5: Declare and define the function get1() to get the salary details.
• Step 6: Define the function calculate() to find the net pay.
• Step 7: Define the function display().
• Step 8: Create the derived class object.
• Step 9: Read the number of employees.
• Step 10: Call the function get(),get1() and calculate() to each employees.
• Step 11: Call the display().
• Step 12: Stop the program.

Payroll System: Simple Program for Single Inheritance Example Program

#include<iostream.h>
#include<conio.h>

class emp {
public:
    int eno;
    char name[20], des[20];

    void get() {
        cout << "Enter the employee number:";
        cin>>eno;
        cout << "Enter the employee name:";
        cin>>name;
        cout << "Enter the designation:";
        cin>>des;
    }
};

class salary : public emp {
    float bp, hra, da, pf, np;
public:

    void get1() {
        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() {
        cout << eno << "\t" << name << "\t" << des << "\t" << bp << "\t" << hra << "\t" << da << "\t" << pf << "\t" << np << "\n";
    }
};

void main() {
    int i, n;
    char ch;
    salary s[10];
    clrscr();
    cout << "Enter the number of employee:";
    cin>>n;
    for (i = 0; i < n; i++) {
        s[i].get();
        s[i].get1();
        s[i].calculate();
    }
    cout << "\ne_no \t e_name\t des \t bp \t hra \t da \t pf \t np \n";
    for (i = 0; i < n; i++) {
        s[i].display();
    }
    getch();
}

Sample Output

Enter the Roll no: 100
Enter two marks

90
80

Enter the Sports Mark: 90

Roll No: 100
Total    : 260
Average: 86.66