Set asisde space for ADT when reading integers from file

Posted by That Guy on Stack Overflow See other posts from Stack Overflow or by That Guy
Published on 2010-05-19T13:15:17Z Indexed on 2010/05/19 13:40 UTC
Read the original article Hit count: 231

Filed under:

malloc

|

filesize

|

integer

|

adt

|

memory-allocation

I'm using C to make maze solver. The program should be able read a maze from a text file containing a grid of 1 and 0 representing walls and paths. This file could be of any size as the user selects which maze to use. The program should then show the maze being solved. As the maze is being solved it should show where has been walked and how many steps have been taken. I have made an ADT called Cell containing a bool for wall or path and an integer for steps taken. I now need to populate a 2D array of Cells which means I need to set aside enough space to store a Cell for every integer in the maze file. What would be the best way to do this?

© Stack Overflow or respective owner

Related posts about malloc

Malloc corrupting already malloc'd memory in C

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm currently helping a friend debug a program of his, which includes linked lists. His list structure is pretty simple: typedef struct nodo{ int cantUnos; char* numBin; struct nodo* sig; }Nodo; We've got the following code snippet: void insNodo(Nodo** lista, char* auxBin, int auxCantUnos){ … >>> More
Multidimensional array with unequal second dimension size using malloc()

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am playing around with multidimensional array of unequal second dimension size. Lets assume that I need the following data structure: [&ptr0]-[0][1][2][3][4][5][6][7][8][9] [&ptr1]-[0][1][2] [&ptr2]-[0][1][2][3][4] int main() { int *a[3]; int *b; int i; a[0] = (int *)malloc(10… >>> More
Cannot understand how new or malloc does work with BYTE*

as seen on Stack Overflow - Search for 'Stack Overflow'
I trying to allocate memory for 10 bytes BYTE* tmp; tmp = new BYTE[10]; //or tmp = (BYTE*)malloc(10*sizeof(BYTE)); But after new or malloc operation length of *tmp more than 10 (i.e. '\0' char not in 10 position in tmp array) Why? >>> More
C Programming: malloc and free within a loop

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I just started out with C and have very little knowledge about performance issues with malloc() and free(). My question is as such: if I were to call malloc() followed by free() in a while-loop that loops for, say, 20 times, would it run slower compared to if I were to call free() outside… >>> More
Wrapping malloc - C

as seen on Stack Overflow - Search for 'Stack Overflow'
I am a beginner in C. While reading git's source code, I found this wrapper function around malloc. void *xmalloc(size_t size) { void *ret = malloc(size); if (!ret && !size) ret = malloc(1); if (!ret) { release_pack_memory(size, -1); ret = malloc(size); … >>> More

Related posts about filesize

Convert a small image into a larger version in terms of filesize

as seen on Super User - Search for 'Super User'
I need to create a large image (in filesize) using a small one as a source. Images on my website are being hotlinked and I'd like to get revenge. I want to replace the hotlinked images with one huge image (several megs in size) and serve that to them instead. I've found a good image, but it's less… >>> More
Validate FileSize from javascript [client side]

as seen on Stack Overflow - Search for 'Stack Overflow'
when upload button clicked on page... want to check filesize selected in fileupload control and stop postback of upload button if file size exceeds... what are the ways to do this using jquery/javascript? >>> More
smallest filesize for transparent gif

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm looking for the smallest (in terms of filesize) transparent 1 pixel image. Currently I have a gif of 49 bytes which seems to be the most popular. But I remember many years ago having one which was less than 40 bytes. Could have been 32 bytes. Can anyone do better? Graphics format is no concern… >>> More
Real average filesize in a set of files...

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have an apparently "simple" problem but I can't find the solution for some reason... I have n millions files of different sizes and I want to find the average filesize. To simplify it, I grouped them in multiples of 16KB. < 16 KB = 18689546 files < 32 KB = 1365713 files < … >>> More
How can I check the size of a file in a Windows batch script?

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to have a batch file which checks what the filesize is of a file. If it is bigger than %somany% kbytes, it should redirect with GOTO to somewhere else. Example: [check for filesize] IF %file% [filesize thing Bigger than] GOTO No echo Great! Your filesize is smaller than %somany% kbytes. pause exit :no echo… >>> More