CODEWITHSUNDEEP
c++debuggingvisual-studio-debugging
Labeeb
Labeeb

Reputation: 369

Getting assertion failed error while deleting dynamic memory

Here I am declaring a pointer's array and then calling print() method from class A 

A *ptr1[10];

ptr1[0]= new A;

ptr1[0]->print();

Above works fine but when I try to delete it shows assertion failed error

delete[] ptr1;

I am using Visual studio 2010

Details of error:

enter image description here

Upvotes: 0

Views: 362

Answers (2)

Reza Ebrahimi
Reza Ebrahimi

Reputation: 3689

The Good way to do:

#define SIZE 10

A *ptr1[SIZE];

// allocate and do print
for(int i = 0; i < SIZE; i++)
{
    ptr1[i]= new A();
    ptr1[i]->print(); 
}


// deletion
for(int j = 0; j < SIZE; j++)
{
    if(ptr1[j] != NULL)
    {
        delete ptr1[j];
        ptr1[j] = NULL;
    }
}

Upvotes: 1

TheUndeadFish
TheUndeadFish

Reputation: 8171

ptr1 is an an array of pointers to A. Since you didn't allocated ptr1 itself via new, then you shouldn't delete it.

ptr1[0] is a pointer to an A that you allocated. So you would just need to do delete ptr1[0].

Upvotes: 3

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