apti-cpp

1.cpp

#include <iostream>

using namespace std;

    class student{
    public:   int reg;
        string name;
        void display();
        void read();
    private:void display1()
            {
                cout<<"reg-1:"<<reg+10<<endl;

            }
    };
    void student::display()
    {
        cout<<"reg:"<<reg<<endl;
        display1();
    }
    void student::read()
    {
        cout<<"enter data\n";
        cin>>reg;
    }
    int main()
    {
        student s[2];
        for(int i=0;i<2;i++){
        s[i].read();
        s[i].display();
        }


    }

2.cpp

#include <iostream>

using namespace std;

    class A{
    public:   int x;
        float y;
        void display();

    };
    void A::display()
    {
    x=1;
    y=7.2;
        cout<<"x & y"<<x<<endl<<y<<endl;

    }

    int main()
    {
        A a;
        a.display();


    }

3.cpp

#include <iostream>

using namespace std;

    class A{
    public:   int x;
        float y;
        void display() const;

    };
    void A::display() const
    {
   // x=1;
   // y=7.2;
        cout<<"x & y"<<x<<endl<<y<<endl;

    }

    int main()
    {
        A a;
        a.x=10;
            a.y=11;

        a.display();


    }

4.cpp

#include <iostream>

using namespace std;

    class A{
    public:
    mutable  int x;
      mutable  float y;
        void display() const;

    };
    void A::display() const
    {
    x=1;
    y=7.2;
        cout<<"x & y"<<x<<endl<<y<<endl;

    }

    int main()
    {
        A a;
       // a.x=10;
            //a.y=11;

        a.display();


    }

5.cpp

#include <iostream>

using namespace std;

    class Employee{
    public: int eno;
            string ename;
            float salary,da,it,gross,nsalary;
            void read();
            void compute();
            void display();




    };
    void Employee::read()
    {

        cout<<"Enter eno,enmae,salary"<<endl;
        cin>>eno>>ename>>salary;


    }
    void Employee::compute()
    {
        da=(52/100) *salary;
        gross=salary+da;
        it=(30/100)*gross;
        nsalary=salary+da-it;

    }
    void Employee::display()
    {
        cout<<"Name:"<<ename<<endl;
        cout<<"eno:" <<eno<<endl;
        cout<<"salary:"<<salary;
        cout<<"da:"<<da;
        //cout<<"it"<<endl<it;
        cout<<"gross"<<endl<<gross;
        cout<<"net salary"<<endl<<nsalary;
    }

    int main()
    {
        Employee emp[10];
        int n=2;
        cout<<"Enter details"<<endl;
        for(int i=0;i<2;i++)
        {
        emp[i].read();
        emp[i].compute();
        }
        for(int i=0;i<2;i++) emp[i].display() ;


    }