So do I like really need to learn about them ? Isn't there an interesting way to learn about stacks, linked lists, heaps ,etc ? I found it a boring subject. **While posting this question it showed some warning.Am I not allowed to post such a question ? Admins please clarify and I will delete it :/ Warning :: The question you're asking ...
Hi I am working on a program where I have to initialize a deck of cards. I am using a struct to represent a card. However I'm not filling it correctly as I get a bunch of zero's when I display the deck of cards. I believe my mistake is in this line but I'm not sure: struct card temp = {"Clubs", value, false}; The code: void initCard...
I have a C# project in which i use several unmanaged C++ functions. More so, I also have static IntPtr that I use as parameters for those functions. I know that whenever I use them, I should implement IDisposable in that class and use a destructor to invoke the Dispose method, where I free the used IntPtr, as is said in the MSDN page. p...
Hi, i need to help with structures, inheritance and definition. //define struct struct tStruct1{ int a; }; //definition tStruct1 struct1{1}; and inheritance struct tStruct2:tStruct1{ int b; }; How can I define it in declaration line? tStruct2 struct2{ ????? }; One more question, how can i use inheritance for structures ...
I am trying to modularize a function that used to add values to multiple structures in one call. Now I want to do one value addition per call, but I am not sure how to make a less specific argument reference. func ( [?] *val ) { } ...
I have a table of structures and this structures are 2 dimentional table of constants. can you teach me on how to get the values in the table of constants. (note following is just example) typedef struct { unsigned char ** Type1; unsigned char ** Type2; } Formula; typedef struct { Formula tformula[size]; } table;...
Hi, I'm trying to initialise a structure which ends with an array[0] (here, char iedata[0]) for the actual packet payload. If I try to initialise it inline, like this: struct some_packet pkt = { .elem1 = blah, .elem2 = bleh, .iedata = { 1, 2, 3, 4 } }; I get a warning from gcc: warning: (near initialization for ‘pkt.ie...
Hi, I try to pass a pointer of a structure which is given me as a return value from the function 'bar' to the function 'foo_write'. But I get the error message 'TypeError: must be a ctypes type' for line 'foo = POINTER(temp_foo)'. In the ctypes online help I found that 'ctypes.POINTER' only works with ctypes types. Do you know of anothe...
I have a structure Defined in the Header file for a class i am working in, and i am trying to use the Struct in one of the methods of the class. It looks basically like this: struct example { double a; int b; ... }; in the header above my class definition, and then in the cpp file, i have: void exampleclass::test(){ ...
All, Here is an example on Unions which I find confusing. struct s1 { int a; char b; union { struct { char *c; long d; } long e; }var; }; Considering that char is 1 byte, int is 2 bytes and long is 4 bytes. What would be the size of the entire struct here ? Will the...
I have to access a POS terminal under ms windows xp. I am using python 2.7. The crucial function in the DLL I load that does the payment accepts two pointer to structures, but it crashes returning 1 (Communication error) but without further messages. Please note that when the payment function is called, not all the elements of POSData st...
I am writing a C program. I want a variable that I can access as a char but I can also access the specific bits of. I was thinking I could use a union like this... typedef union { unsigned char status; bit bits[8]; }DeviceStatus; but the compiler doesn't like this. Apparently you can't use bits in a structure. So what can I ...
Hello i want to make a Antivirus Software in DataStructure using C#.So help neended for the Algorithm. ...
I am able to get a Structure populated as a result of a dll-function (as it seems looking into it using x=buffer(MyData) and then repr(str(buffer(x))) ) But an error is raised if I try to access the elements of the Structure using .value I have a VarDefs.h that requires a struct like this: typedef struct { char Var1[8+1]; char...
A lot of those coders, who are succeed contests like TopCoder SRMs, or Google Codejam, etc., get good jobs and salary. But is it really neccesary? I mean, do all code developers should know different algorithms, structures, or all this contests are just wasting of time? The problem is those contests take much time - to train, to study, t...
Apologies for the appalling title. I have mocked up this code to mimic an issue I was encountering on a project. I want to know why the property status does not 'stick'. Stepping through the code I can even see it setting the property! Is it something to do with Structure being a value type? Here is the code, it is standalone. Impor...
I have started reading the Lions Commentary on Unix v6. I came across these snippets, which I have never seen used in the C language. The author does provide some sort of an explanation, but could someone explain to me what is happening here? params.h : SW 0177570 ...... struct { int integ; }; and this used in unix/prf.c if(SW->int...
I'm looking into creating a generic BST. Nothing fancy no COTS, but I'm trying to decide the best way to keep track of the type of the void*. Here's the interface for the nodes: typedef struct { void *data; struct TreeNode *left; struct TreeNode *right; } TreeNode; However, when I write add/remove, I'll need to do compariso...
hi, In the previous question, i made a big mess there. So i want to give it a new try. struct emp { int salary; string empid; }; struct payroll { int empid; int deductions; }; emp a1,a2, a3; a1.salary = 9000; a1.empid = 1; a2.salary = 1000; a2.empid = 2; a3.salary = 9000; a3.empid = 3; ...
This isnt a homework question. I took data structures at a Community College and now that i am at the university i talked to the teacher about there data structures class. Now, since its really different and the class i took transferred, He gave me one of there assignments and said play with it. We never did any containers, wrappers,temp...