Q22

//Q 22 CREATE CLASS 'INVENTORY' THAE STORE ITEM NO,ITEM NAME,PRICE AND QUANTITY .
// OVERLOAD OPRATIONS
//UNARY + TO ADD ITEMS
//UNARY - TO DELETE ITEMS
// BINARY + TO INCREAMENT PRICE BY 10% FOR ITEMS HAVING PRICE LESS THEN PARTICULAR PRICE
//DEFINE FUNCTION TO DISPLAY ALL ITEM WITH DETAILS
#include<iostream>
using namespace std;
int t=-1;
class inventory
{
    private:

        char i_name[30];
        float price,qty;

    public:
        int i_no;
        void get_data()
        {
            cout<<"---------------------------------------------------------------";

            cout<<endl<<"Enter the item no: ";
            cin>>i_no;
            cout<<endl<<"Enter the item name: ";
            cin>>i_name;
            cout<<endl<<"Enter the item price: ";
            cin>>price;
            cout<<endl<<"Enter the item qty: ";
            cin>>qty;
            cout<<"---------------------------------------------------------------";
        }
        void put_data()
        {
            cout<<endl<<i_no<<"\t"<<i_name<<"\t"<<price<<"\t"<<qty<<"\t"<<price*qty;
        }
        void put_no()
        {
            cout<<i_no;
        }
        void operator +()
        {

            cout<<"-------------------+op overload--------------------------------";
            cout<<endl<<"Enter the item no: ";
            cin>>i_no;
            cout<<endl<<"Enter the item name: ";
            cin>>i_name;
            cout<<endl<<"Enter the item price: ";
            cin>>price;
            cout<<endl<<"Enter the item qty: ";
            cin>>qty;
            cout<<"---------------------------------------------------------------";

        }
        void operator -()
        {
            t--;
        }


};
int main()
{
    inventory i[10];
    int ch;

    do
    {

        cout<<endl<<"================menu===============";
        cout<<endl<<"1.ADD";
        cout<<endl<<"2.DELETE";
        cout<<endl<<"3.increament all price by 10%";
        cout<<endl<<"4.DISPLAY";
        cout<<endl<<"5EXIT";
        cout<<"\nENter your choice: ";
        cin>>ch;
        switch(ch)
        {
            case 1:
                if(t<9)
                {
                    t++;
                    +i[t];
                    for(int j=0;j<=t;j++)
                    {
                        i[j].put_data();
                    }
                }
                else
                {
                    cout<<endl<<"only 10 items can inserted";
                }
                break;
            case 2:
                if(t!=-1)
                {

                    cout<<endl<<"*** item NO = "<<i[t].i_no<<" was deleted";
                    -i[t];

                    for(int j=0;j<=t;j++)
                    {
                        i[j].put_data();
                    }
                }
                else
                {
                    cout<<endl<<"Insert some Items";
                }
                break;
            case 3:
                cout<<"\nEMPTY";

                break;
            case 4:
                for(int j=0;j<=t;j++)
                {
                    i[j].put_data();
                }
                break;
        }
    }while(ch>=1 && ch<=4);
    return 0;
}