Thread: What does this error mean and how can I resolve it

When i run my program that's supposed to copy one array to another i get the following error:
Unhandled exception at 0x592413af (msvcr100d.dll) in TextMirrorArray.exe: 0xC0000005: Access violation reading location 0x00000026.

What does this mean and how can i resolve this?

Here is my code:

Code:

#include <stdlib.h>
#include <stdio.h>
#include "ArrayMirror.h"
#define COLLUMS 40
#define ROWS 3

void main() 
{
    char array1[][COLLUMS] = {{"one"},{"two"},{"three"}};
    char array2[ROWS][COLLUMS];
    char *parray[ROWS][COLLUMS];
    int i,i2;
    for(i = 0;i <= ROWS; i++)
    {
        for(i2 = 0; i2 <= COLLUMS;i2++)
        {
            parray[i][i2] = &array1[i][i2];
        }
    }
    printf("array1 equals\n");
    for(i = 0;i <= ROWS; i++)
    {
        for(i2 = 0; i2 <= COLLUMS;i2++)
        {
            printf("%s",array1[i][i2]);
        }
        putchar('\n');
    }
    printf("array2 equals\n");
    for(i = 0;i <= ROWS; i++)
    {
        for(i2 = 0; i2 <= COLLUMS;i2++)
        {
            printf("%s",array2[i][i2]);
        }
        putchar('\n');
    }
    printf("Now mirroring array2 to mirror array1\n");
    MirrorArrays(array1,parray);
    printf("array2 mirrored from array 1 equals\n");
    for(i = 0;i <= ROWS; i++)
    {
        for(i2 = 0; i2 <= COLLUMS;i2++)
        {
            printf("%s",array2[i][i2]);
        }
        putchar('\n');
    }
    getchar();

}

Here is the ArrayMirror Body

Code:

#include "ArrayMirror.h"
#include <stdlib.h>
#define ROWS 20
#define COLLUMS 40


void MirrorArrays(char readarray[][COLLUMS], char *writearray[][COLLUMS])
{
    int i,i2;
    for( i = 0; i <= ROWS; i++)
    {
        for( i2 = 0; i2 <= COLLUMS; i2++)
        {
            writearray[i][i2] = &readarray[i][i2];
        }
    }
    

}

And here is the ArrayMirror Header:

Code:

#ifndef ARRAYMIRROR
#define ARRAYMIRROR

#define COLLUMS 40

void MirrorArrays(char readarray[][COLLUMS], char *writearray[][COLLUMS]); 

#endif

Thank You,

Thank you for answering my question. this should work now.

The answer has already been given. But for the future -- if you run it in a debugger it'll tell you where the code has gone wrong. Can be very useful for debugging problems like this. I think gdb will just stop after the SIGSEGV, Visual Studio requires to you go to (from memory) Debug --> Processor Exceptions and tick the box for 0xC0000005: Access violation. It'll dump you in the middle of library code, but you can go back up the call stack and find out what's gone wrong.

Wouldn't have helped here as you didn't actually know that the access was out of bounds. For the future though!