プロジェクトを実行するとこのエラーが繰り返されます。問題がどこにあるか分かりません。私はそれが私が再び使用されるいくつかの空きメモリについて知っている、または非へのNULLポインタまたはアクセスがメモリを存在するが、実際に私はすべてのポインタをチェックし、彼らは彼らがすることが必要として宣言されています。ここで このエラーが発生しました。「ハッシュ関数の0x009437bdで処理されない例外:0xC0000005:0x00000001のアクセス違反」
はコードです:#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;
}
が無い建物エラーがちょうどこれらのものがあるとき、ハッシュfunctions.exeで0x009437bdにブレークポイント
初回例外: 0xc0000005で:アクセス違反読み取り場所0x00000001。処理されていない ハッシュ関数の0x009437bdでの例外:0xC0000005:アクセス 違反の読み取り場所0x00000001。ファンクション違反で 0x009437bdに最初の例外が発生しました。0xC0000005: の場所0x00000001を読み取るアクセス違反。スレッドのWin32のスレッド '(0x1e40)は、コード-1073741510(0xc000013a)と を終了しました。プログラム '[788] Hash functions.exe:Native'がコード-1073741510(0xc000013a)で終了しました。
コンパイラのすべての警告を有効にする方法、コンパイラがデバッグ可能な実行可能ファイル内にデバッグ情報を生成する方法、およびデバッガの使用方法を学習する必要があります。 –
NULLを指し示すものにアクセスしようとすると、Isntアクセス違反がスローされますか? – mslot
@mslot - または、マップされていないものを読み書きするときは、 – Flexo