#array of

Fetch values in interdependent array of struct in c++

I have many interdependent array of structures. Im struggling hard with member variable pointers to a record in array of another struct. Putting 3 structs for your reference

struct struct1 { int node_id; struct2* ptr; }; struct struct2 { int node_id; int type; struct1* owner; struct2* next; struct2* previous; struct3* block1; struct3* block2; }; struct struct3 { int node_id; int n_entries;…

Can’t initialize 2D array of objects in Java

I’m trying to make a battleship game, for which I need a 2D array of squares, which are the places that a person can pick. When I run my program however, I get a null pointer exception when I try to call the resetBoard() function.

Battleship class:

public class Battleship { private Square[][] squares; private boolean aircraftCarrierSunk; private boolean battleshipSunk; private boolean…

REST – How to pass an array of long in parameter with Jersey?

I am trying to pass an array of long with Jersey :

In the client side i have trying something like that :

@GET @Consume("text/plain") @Produces("application/xml) Response getAllAgentsById(@params("listOfId") List<Long> listOfId);

Is there a way to realize something like that?

Thanks in advance!

Answer

If you want to stick to “application/xml” format and avoid JSON format, you should wrap…

Pointer to an array of pointers to Linked lists

hey guys right so i have been at this problem for the last 6 hours and have been hitting google like mad to no avail. Right I need a pointer to an array. This array contains pointers to Linked lists. Im going to have to malloc it since I dont know the array size until runtime.

LList **array

this was my first thought but this just gives me a pointer to an array of LList. Or atleast that is my…

Interating through an array of structs

I have a very specific problem I am trying to solve. I have an array of structs containing product information. Each struct has the following information.

Supply type product name wholesale price quantity of wholesale retail price retail product quantity

My array of structs is complete and that is fine and dandy. Now, let’s say there are a couple of supply types such as:

Meat Dairy Fruit etc……

How to properly malloc for array of struct in C

I will read in two set of char* (or strings) using strtok, and since those two set of chars are related, (address : command\n) I decided to use a structure.

struct line* array = (struct line*)malloc(sizeof(file) * sizeof(struct line*));

This line mallocing space for the function gives me a segmentation fault and was wondering if you can tell me a proper way to mallocspace for it. For context,…