Fahad sir Assignment (Half done)

#include<iostream>
#include<string>
using namespace std;
int y=0,z=0;

class Nodes
{
protected:
    string name;
    int n;
    string adjacent[10] = {"Null"} ;
    int cost[10] = {0};
public:
    Nodes()
    {
        cout << "Input Node name:" <<endl;
        getline(cin,name);
        cout << "Input number of Adjacent & Cost:"<<endl;
        cin >> this->n;

    }
    void getData()
    {
       int i;
       string str1 = "X";
       char adjName[100];
       cout << "Input Adjacent list:" <<endl;
       cin.ignore();
       for(i=0; i<n; i++)
       {
           cin.getline(adjName,100);
           adjacent[i] = adjName;
           if(adjacent[i].compare(str1) == 0)
           {
               adjacent[i] = "Null";
               showInfo();
               y=1;
               break;
           }

       }
       if(y==0)
       {
           cout << "Input Cost list:" <<endl;
           for(i=0; i<n; i++)
           {
               cin >> cost[i];
               if(cost[i] == 88) //ASCII value of X
               {
                   cost[i] = 0;
                   showInfo();
                   break;
               }
           }
       }


    }
    void showInfo()
    {
        cout<< "\n\nNode name is: "<< this->name <<endl;
        int i;
        cout << "\nAdjacent List:" <<endl;
        for(i=0; i<n; i++)
        {
            cout << adjacent[i] << endl;
        }
        cout << "\nCost List:" <<endl;
        for(i=0; i<n; i++)
        {
            cout << cost[i] <<endl;
        }
        z = 1;

    }
};
int main()
{
    Nodes san_franciso;
    san_franciso.getData();
    if(z==0)
    {
       san_franciso.showInfo();
    }

    return 0;
}