AMAZON ORDER

#include <iostream>

#include<algorithm>

#include<vector>

#include<list>

#include<map>

#include<unordered_map>

 using namespace std;

 class inventory{

    public:

map<string,int>m;

inventory(){

m.emplace("TV",100);

m.emplace("HDTV",75);

m.emplace("HP LAPTOP",45);

m.emplace("PLAYSTATION 5",30);

m.emplace("NINTENDO SWITCH 2",60);

}

 string toUpper(string str) {

        transform(str.begin(), str.end(), str.begin(), ::toupper);

        return str;

 }

void order( ){

    while(true){

    cout<<" what do you want to order ?"<<endl;

    string s;

    cin >> ws; // remove leading spaces

        getline(cin, s); // allow spaces in product names

        s = toUpper(s);

        if(s=="EXIT"){

            cout<<" thank you for shopping "<<endl;

            exit(0);

        }

    if(m.find(s)!=m.end()){

    cout<<" your order is "<<s<<endl;

    }

    else{

        cout<<" your order is invalid "<<endl;

    }

cout<<" enter the quantity of your order "<<endl;

int q;

cin>>q;

if(q<=0){

    cout<<" invalid quantity "<<endl;

    return;

}

if(q>m[s]){

    cout<<"Sorry we have "<<m[s]<<" stock only ";

    return;

}

m[s] -= q;

            cout << "Quantity of your order is " << q << endl;

            cout << "Remaining quantity is " << m[s] << endl;

}

}

 };

 int main() {

    inventory I;

    I.order();

 return 0;

 }