Я получаю эту ошибку снова и снова, когда я запускаю свой проект. Не знаю, где проблема. Я знаю, что это какая-то свободная память, которую я использовал снова, или нулевой указатель или доступ к несуществующей памяти, но на самом деле я проверил все указатели, и они объявлены такими, какими они должны быть.
Вот код:
#include <iostream>
using namespace std ;
typedef struct ND {
int ID;
char* Name;
char* Address;
int Age;
double GPA;
ND * next;
} NODE;
class HF {
private :
int count;
int size ;
int prime;
int a ,b;
NODE ** HT;
public:
HF ();
HF ( int n , int p , int a, int b);
~ HF ();
int findindex(int key);
bool insert (int ID,char* Name,char* Address,int Age,double GPA);
bool retrieve (int & ID,char* & Name,char* & Address,int & Age,double & GPA);
bool remove(int key);
double GetLoadFactor ();
};
HF :: HF ()
{
size = 100;
prime = 997;
a = 23 ;
b = 88;
count =0;
HT = new NODE* [size];
for (int i=0; i< size ; i++)
HT[i] = NULL;
}
HF :: HF ( int n , int p , int a, int b)
{
size = n;
prime = p;
a = a;
b = b;
count = 0;
HT = new NODE* [size];
for (int i=0; i< size ; i++)
HT[i] = NULL;
}
HF :: ~ HF ()
{
NODE *p;
for (int i=0 ; i<size ; i++)
{
while (HT[i] != NULL)
{
p = HT[i];
HT[i] = HT[i] -> next ;
delete p;
}
}
delete [] HT ;
}
int HF :: findindex(int key)
{
int index ;
index = (((a*(key)+b) % prime) % size) ;
index = index % size ;
return index;
}
bool HF :: insert (int ID,char* Name,char* Address,int Age,double GPA)
{
int i ;
NODE * n;
n = new NODE;
n -> ID = ID;
n -> Address = Address;
n -> Name = Name;
n -> Age = Age;
n -> GPA = GPA;
n -> next = NULL;
i = findindex(ID);
if ( HT[i] == NULL)
{
HT[i] = n;
}
else
{
n -> next = HT[i];
HT[i] = n;
}
count ++ ;
return true;
}
bool HF ::retrieve (int & key,char* & Name,char * &Address,int & Age,double & GPA)
{
int i ;
NODE *p;
i = findindex(key);
if ( HT[i] == NULL)
{
return false;
}
else
{
p = HT[i];
if ( HT[i] -> ID == key)// here is the break point
{
key = p-> ID ;
Name = p-> Name ;
Address = p-> Address ;
Age = p-> Age;
GPA = p-> GPA ;
return true ;
}
while ( p != NULL)
{
if ( p-> ID == key)
{
key = p-> ID ;
Name = p-> Name ;
Address = p-> Address ;
Age = p-> Age;
GPA = p-> GPA ;
return true ;
}
else
p = p-> next ;
}
}
return false;
}
bool HF :: remove (int key)
{
int i ;
NODE *p1 , *p2;
i = findindex(key);
if ( HT[i] == NULL)
{
return false;
}
else
{
p1 =p2 = HT[i];
if(HT[i] -> ID == key)
{
HT[i] = HT[i] -> next;
delete p2;
return true;
}
while ( p2 != NULL)
{
if ( p2 -> ID == key)
{
p1 -> next = p2 -> next ;
delete p2;
count --;
return true;
}
else
{
p1 =p2;
p2 = p2 -> next;
}
}
}
return false;
}
double HF :: GetLoadFactor()
{
double L;
L = (double) count/size ;
return L;
}
int main ()
{
double L;
int x,age;
char * name , *address;
double GPA;
HF UHashFunc1;
HF UHashFunc2( 11 , 7 , 3 , 0);
UHashFunc1.insert( 6 , "Ahmed" , "Jenin" , 20 , 3.5);
UHashFunc1.insert( 1 , "Sarah" , "Jenin" , 18 , 3.2);
UHashFunc1.insert(40 , "Mohammad" , "Tolkrem", 19 , 3.0);
UHashFunc1.insert(2 , "Ala'a" , "Jerusalem", 19 , 2.6);
UHashFunc1.insert(41 , "Raghad" , "Tolkrem", 19 , 1.6);
UHashFunc1.insert(80 , "Mohammad" , "Jenin", 22 , 2.7);
UHashFunc1.insert(83 , "Murad" , "Nablus", 18 , 3.7);
UHashFunc1.insert(44 , "Reem" , "Hebron", 19 , 2.9);
UHashFunc1.insert(50 , "Wajde" , "Qalqelya", 20, 1.7);
UHashFunc1.insert(42 , "Belal" , "Hebron", 20 , 3.4);
UHashFunc1.insert(3 , "Ahmed" , "Nablus", 21 , 1.9);
UHashFunc1.insert(84 , "Haitham" , "Nablus", 21 , 3.1);
cout <<"enter the ID you want to retrieve"<<endl;
cin>>x;
if(UHashFunc1.retrieve(x,name,address,age,GPA))
{
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
}
else
cout<<"NOT FOUND"<<endl;
cout <<"enter the ID you want to retrieve"<<endl;
cin>>x;
if(UHashFunc1.retrieve(x,name,address,age,GPA))
{
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
}
else
cout<<"NOT FOUND"<<endl;
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor is : " << L <<endl;
UHashFunc1.remove(42);
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor is : " << L <<endl;
x=84;
UHashFunc1.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
x=1;
UHashFunc1.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
x=50;
UHashFunc1.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
cout << "Enter The ID you want to remove"<<endl;
cin>>x;
if(UHashFunc1.remove(x))
{
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor after removing a record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
if(UHashFunc1.remove(2))
{
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor after removing a record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
UHashFunc1.insert( 45 , "Amjad" , "Nablus" , 19 , 2.0);
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor after adding a record is : " << L <<endl;
if(UHashFunc1.remove(80))
{
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor after removing the record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
if(UHashFunc1.remove(50))
{
L=UHashFunc1.GetLoadFactor();
cout << "The current load factor after removing the record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
UHashFunc2.insert( 5 , "Ahmed" , "Jenin" , 20 , 3.5);
UHashFunc2.insert( 1 , "Sarah" , "Jenin" , 18 , 3.2);
UHashFunc2.insert(9 , "Mohammad" , "Tolkrem", 19 , 3.0);
UHashFunc2.insert(2 , "Ala'a" , "Jerusalem", 19 , 2.6);
UHashFunc2.insert(8 , "Raghad" , "Tolkrem", 19 , 1.6);
UHashFunc2.insert(100 , "Mohammad" , "Jenin", 22 , 2.7);
UHashFunc2.insert(50 , "Murad" , "Nablus", 18 , 3.7);
UHashFunc2.insert(23 , "Reem" , "Hebron", 19 , 2.9);
UHashFunc2.insert(40 , "Wajde" , "Qalqelya", 20, 1.7);
UHashFunc2.insert(17 , "Belal" , "Hebron", 20 , 3.4);
UHashFunc2.insert(3 , "Ahmed" , "Nablus", 21 , 1.9);
UHashFunc2.insert(7 , "Haitham" , "Nablus", 21 , 3.1);
cout <<"enter the ID you want to retrieve from the 2nd Func"<<endl;
cin>>x;
if(UHashFunc2.retrieve(x,name,address,age,GPA))
{
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
}
else
cout<<"NOT FOUND"<<endl;
cout <<"enter the ID you want to retrieve from the 2nd Func"<<endl;
cin>>x;
if(UHashFunc2.retrieve(x,name,address,age,GPA))
{
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
}
else
cout<<"NOT FOUND"<<endl;
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor is : " << L <<endl;
UHashFunc2.remove(2);
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor is : " << L <<endl;
x=5;
UHashFunc2.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
x=1;
UHashFunc2.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
x=50;
UHashFunc2.retrieve(x,name,address,age,GPA);
cout << "ID:"<<x<<endl;
cout << "Name:"<<name<<endl;
cout << "Address:"<<address<<endl;
cout << "Age:"<<age<<endl;
cout << "GPA:"<<GPA<<endl;
cout << "Enter The ID you want to remove from the 2nd Func"<<endl;
cin>>x;
if(UHashFunc2.remove(x))
{
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor after removing a record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
if(UHashFunc2.remove(2))
{
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor after removing a record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
UHashFunc2.insert( 45 , "Amjad" , "Nablus" , 19 , 2.0);
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor after adding a record is : " << L <<endl;
if(UHashFunc2.remove(100))
{
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor after removing the record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
if(UHashFunc2.remove(9))
{
L=UHashFunc2.GetLoadFactor();
cout << "The current load factor after removing the record is : " << L <<endl;
}
else
{ cout << "NOT Exist"<<endl;}
cin>>x;
return 0;
}
Нет ошибок здания, только эти, когда точка останова
Исключение первого шанса в 0x009437bd в Hash functions.exe:
0xC0000005: Место чтения нарушения доступа 0x00000001. Неизвестное
исключение в 0x009437bd в хэш-функции.exe: 0xC0000005: доступ
нарушение чтения местоположения 0x00000001. Исключение первого шанса в
0x009437bd в Hash functions.exe: 0xC0000005: чтение о нарушении доступа
расположение 0x00000001. Поток 'Win32 Thread' (0x1e40) вышел
с кодом -1073741510 (0xc000013a). Программа '[788] Хэш
functions.exe: Нативный 'вышел с кодом -1073741510 (0xc000013a).