I'm hoping somebody can help me with an issue I'm running into while trying to resize an array of pointers. Part of the program I'm writing reads in a directory from Windows and stores each folder into an array so I know how many folders are in that directory and what those folders are.
As expected, I can't guarantee each folder has the same number of directories, so I want to have code in place that resizes the array to be larger if it hits the max initial size.
Right now I have the following for doing this:
*initial declaration of array*
int arraySize = 64;
char* textList[arraySize]; // the array in question
memset(textList,'\0',arraySize); // setting all values of array to null since it won't initially be full anyway. That way I can run normal print-outs and it will end where it should depending on it's size.
Right now the code crashes on item #85 after the increase. I've determined that something is up with my reassignment I think, because if I assign say textList2 to something and print out textList2 it displays fine. However after reassigning textList to textList2 and trying to print textList it crashes.
arraySize = arraySize * 2; // double array size
char * textList2[arraySize]; // create temporary array
memset(textList2,'\0',arraySize); // set all values to null like before
textList2[j] = textList[j]; // place all items from textList into textList2
free(textList); // free memory at textList
*textList = *textList2; // reassign textList to textList2
Can anyone help point out what I'm doing wrong? Any help would be greatly appreciated.