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#include <iostream>
#include <fstream>
using namespace std;

int getWhatTheyWant();
void displayItems(int x);

//main function
int main(){

    int whatTheyWant;

    whatTheyWant = getWhatTheyWant();

    while(whatTheyWant !=4){
        switch(whatTheyWant){
            case 1:
                displayItems (1);
                break;
            case 2:
                displayItems (2);
                break;
            case 3:
                displayItems (3);
                break;


        }
        whatTheyWant = getWhatTheyWant();
    }

}

//getWhatTheyWant funcion
int getWhatTheyWant(){
    int choice;

    cout << "\n1 - just plain items" << endl;
    cout << "2 - helpful items" << endl;
    cout << "3 - harmful items" << endl;
    cout << "4 - quit program\n" << endl;


    cin >> choice;
    return choice;
}

//display items function
void displayItems(int x){

    ifstream objectFile("objects.txt");
    string name;
    double power;

    if(x==1){
        while(objectFile >> name >> power){
            if(power==0){
                cout << name << ' ' << power << endl;
            }
        }
    }

    if(x==2){
        while(objectFile >> name >> power){
            if(power>0){
                cout << name << ' ' << power << endl;
            }
        }
    }

    if(x==3){
        while(objectFile >> name >> power){
            if(power<0){
                cout << name << ' ' << power << endl;
            }
        }
    }

}