Unhandled exception at 0x00E02BB4 in Pointers.exe: 0xC0000005: Access violation reading location 0xCCCCCCCC

Asked Mar 04 '16 at 10:37

Active Mar 04 '16 at 11:11

Viewed 546 times

Here's the code I have written in Visual Studio:

#include <iostream>
#include <conio.h>

using namespace std;


class pointer
{
    private:
        int *ptr;
        int **ptr1;
    public:
        int FindSize();
};

int pointer :: FindSize()
{
    ptr1 = &ptr;
    return **ptr1;
}

int main()
{
    pointer point;
    int size = point.FindSize();
    cout << size;
    getch();
    return 0;
}

I am getting this error:

Unhandled exception at 0x00E02BB4 in Pointers.exe: 0xC0000005: Access violation reading location 0xCCCCCCCC

edited Mar 04 '16 at 10:47

Praveen

8,945
4
31
49

asked Mar 04 '16 at 10:37

Ankit0047

9

`*ptr1`, which is `ptr`, is not initialized, so you mustn't dereference it. – MikeCAT Mar 04 '16 at 10:38
1

Please indent your code. – Jabberwocky Mar 04 '16 at 10:40
You're returning a double pointer instead of a dereferenced pointer in your function `findSize()`. – Poriferous Mar 04 '16 at 10:49
@Poriferous _"You're returning a double pointer instead of a dereferenced pointer "_ That's wrong. The function returns a dereferenced double pointer, the problem is that the pointer it points to was never initialized correctly. – πάντα ῥεῖ Mar 04 '16 at 10:54
yes *ptr was not initialized with a valid location..thanks – Ankit0047 Mar 04 '16 at 11:07
0xCC means you've read [uninitialized memory](https://stackoverflow.com/q/370195/995714) – phuclv Oct 17 '17 at 04:33

Unhandled exception at 0x00E02BB4 in Pointers.exe: 0xC0000005: Access violation reading location 0xCCCCCCCC

0 Answers0