structures, unions and enum in c++

 #include<iostream>

using namespace std;

//structure is a user defined data type which stores value of other data types.
//arrays ko use kr skte h sirf similar type ke data type ko store krne k liye

typedef struct employee
    {
        /* data */
        int employee_id; //4 bytes
        char favchar; //1 byte
        float salary; //4 bytes

    }KS;

    union money
    {
        /* data */
        int rice;//4
        char cars;//1 //hum in teeno m se ek time pr sirf ek cheez use krenge
        float homes;//4 //teeno mese koi ek set kr skte h. mtlb koi ek trh ka data type use krna chahein

    };

    //union memory share kradega inn teeno ke beech main
    //union 4 (max) byte memory allocate krdega so that teeno ka kaam bn jaega, as use to koi ek hona h

//emplyee yaha pe ek structure data type hai jo different different data types ki
//value ko store kar raha hai
/*typedef keyword ka use ye hai ki typedef lgane ke baad after bracket hum jo bi likhenge (KS)
vahi key word use krr skte hain in place of "struct employee"*/
int main(){
    //struct employee krishna;
    //struct employee shalini; //emplyee structure use krke hum uske data type
    //struct employee krisha;  //bana skte hain for example shalini and krisha
    KS krishna;
    KS shalini;  
    KS krisha;
    krishna.employee_id = 5;
    krishna.favchar = 's';
    krishna.salary = 57275727;

    shalini.employee_id = 7;
    shalini.favchar = 'k';
    shalini.salary = 57275727;

    union money ks;
    ks.rice = 57;
    //ks.how_many_cars = 4 ye krenge to garbage value milegi as ek time m ek use kr skte h
    ks.cars = 'b';
    //cout<<ks.rice<<endl;
    cout<<ks.cars<<endl;

    /***************ENUMS**************/

    enum meals {breakfast, lunch, dinner};
    //enum ek data type hai jo given chizo ko integer values m store krta hai mtlb unko 012 and so on allot krdeta
    meals m1=breakfast;
    cout<<m1<<endl;
    cout<<breakfast<<endl;
    cout<<lunch<<endl;
    cout<<dinner<<endl;
    cout<<(m1==2)<<endl; //"0" mtlb false

    //enums se breakfast lunch aur dinner ko 0 1 2 values allot hui iss trh se program zyada readable hojaega

    cout<<"the value of krishna's salary "<<krishna.salary<<endl;
    cout<<"the employee id of krishna is "<<krishna.employee_id<<endl;
    cout<<"the fav character of krishna is "<<krishna.favchar<<endl;

    cout<<"the value of shalini's salary "<<shalini.salary<<endl;
    cout<<"the employee id of shalini is "<<shalini.employee_id<<endl;
    cout<<"the fav character of shalini is "<<shalini.favchar<<endl;

    //unions ekdm structure ki trh hote h but vo better memory management provide krte h
   
    return 0;
}

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