为什么在获取此变量时出现分段错误？

如何解决为什么在获取此变量时出现分段错误？

我正在从文件中将名称作为字符串提取，创建一个Person *p对象，并将其放入数组中。 然后在数组中搜索一个名称，但是当我尝试获取该名称时，出现了分段错误。

为什么会出现这种细分错误，我该怎么办才能解决？

#include <iostream>
#include <string>

using namespace std;

class Person {

private:
    string firstName;
    string lastName;
    string phoneNumber;

public:
    Person();
    Person(string f,string l,string n);
    ~Person(void);

    void setName()
    {
    }
    string getFirstName()
    {
        return firstName;
    }
    string getLastName()
    {
        return lastName;
    }

    string getNumber() { return phoneNumber; }

    void print();
};

创建数组。

{
            ifstream file;

            file.open("phonebook.txt");

            if (!file.is_open()) //Check for File Error.
            {
                cerr << "Failed to open file" << endl;
                exit(1);
            }

            //Get Array Size
            string line;
            while (getline(file,line))
            {
                count++;
            }
            file.close();

            //Create an array
            Person *arrList[count];
            buildArray(arrList,count);

        if (uInput == "a" || uInput == "A") //To add
        {
            int x = addPerson();
            if (x == 1)
            {
                count++;
            }
            delete[] arrList;
        }


void buildArray(Person *arr[],int size)
{
    string f,l,n;
    ifstream file;
    file.open("phonebook.txt");
    for (int i = 0; i < size; i++)
    {
        file >> f >> l >> n;
        Person *p = new Person(f,n);
        arr[i] = p;
        delete p;
    }
}

搜索，这是有麻烦的部分。我尝试了一些其他操作，包括创建2个Persons并比较它们的零件，但是无论何时进入.h，它都无法返回名称。

if (uInput == "s" || uInput == "S")
            {                   //To Search
                string f,l;

                cout << "Find Who (Firstname Lastname) " << endl;
                cin >> f >> l;
                Person *n = new Person(f,"");
                int i = 0;
                bool found = false;

                while (i <= count && found == false)
                {
                    Person *p = new Person("","","");
                    p = arrList[i];

                    if (p->getFirstName() == n->getFirstName() && p->getLastName() == n->getLastName())
                    {
                        arrList[i]->print();
                        found = true;
                        delete p;
                        delete n;
                    }
                    i++;
                }
                while (i == count && found == false)
                {
                    cout << "No results found. " << endl;
                    found = true;
                }
            }