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fgets and sscanf with a struct causing unexpected results

stackoverflow.com - 2013-04-26 00:38:32 - Similar - Report/Block

I have a program I am writing in which I need to fgets a line from a flat file. I then sscanf the line to put the data into a struct. This gives me very unexpected results. First this is a working example similar to what I would like to do. I have a file department.in which looks like the following: 0 something 1 else 2 more Here is an ex...

Unexpected behavior of 'fread()', 'fwrite()' and 'fseek()'

stackoverflow.com - 2012-06-02 02:04:24 - Similar - Report/Block

I wrote a simple C program, which takes a file and replaces all spaces with hyphens. However, the program enters an infinite loop and the result is endless array of hyphens. This is the input file: a b c d e f This is the file after the process crashes: a--------------------------------------- ------------------------------------- ------...

Skipping line from .TXT file

stackoverflow.com - 2013-05-05 12:48:03 - Similar - Report/Block

Hello i have a little problem with my project. I want to scan the text from .TXT file into my struct except from the 1st line in my text file. I tried to do this with fgets() function but it only works the first time. here is a little effort from my work. for (i=1;i<=number;i++){ fgets(s,100,fr); fgets(p_akt->signatura,12,fr); fgets(...

Unexpected result with fgets

stackoverflow.com - 2013-03-05 09:46:19 - Similar - Report/Block

int main(int argc, char** argv) //Local Declaration char last_name[20]; char first_name[20]; char phone_number[20]; char address[30]; //Statement printf("Enter your last name: "); fgets(last_name, 20, stdin); printf("Enter your first name: "); fgets(first_name, 20, stdin); printf("Enter your phone number: "); fgets(phone_number, 20, stdin...

Return a `struct` from a function in C

stackoverflow.com - 2012-03-11 07:59:31 - Similar - Report/Block

Today I was teaching a couple of friends how to use C struct s. One of them asked if you could return a struct from a function, to which I replied: "No! You'd return pointers to dynamically malloc struct s instead." Coming from someone who primarily does C++, I was expecting not be able to return struct s by values. In C++ you can overlo...

How can I use sscanf to read a string between brackets?

stackoverflow.com - 2012-03-30 13:21:30 - Similar - Report/Block

I have some code reading a text file and scanning for words between brackets: '[' and ']'. When I find the line starting with a '[' I read the string with: line[64] = "[word]"; sscanf(line, "[%s]", resource); printf("%s\n",resource); ==> word] but I always end up with the string+the bracket. How can i format sscanf to only read the str...

sscanf equivalent in Java

stackoverflow.com - 2012-05-10 21:50:20 - Similar - Report/Block

I'm pretty new to Java, but seeing how useful sscanf function is, I wonder if it got equivalent in Java. I've got many pretty much formatted strings (namely, writing scripting language for my purposes), so regular expressions are overkill here. Could you help me?...

C cast void* data to typedef struct

stackoverflow.com - 2012-02-27 12:41:24 - Similar - Report/Block

I have a BST library in wich I store some structs : struct bst_node { char *key; void* data; // this one i want to get it casted to struct model struct bst_node* left; struct bst_node* right; Here is the search function that returns me a bst_node that resides in bst.c: struct bst_node** search(struct bst_no...

What happens to pointers after function call

stackoverflow.com - 2013-03-21 06:27:04 - Similar - Report/Block

What happens after a function call when you have a pointer from one pointer struct point to another struct that has allocated memory? I asked a question earlier about structs that lead me to asking this question: scope of struct pointers in functions For example: struct example{ //variables and pointers struct clip *next; }*Head and then...

Creating an array of structs

stackoverflow.com - 2013-03-21 07:26:35 - Similar - Report/Block

So I am attempting to modify some code and I need to create an array of a struct. The struct is declared as follows: typedef struct header int sample_rate; int num_channels; int bit_res; int num_samples; char *data; } header; typedef struct header* header_p; What is the correct way to create and use an array of this struct? I was att...

Array Initialization from a struct

stackoverflow.com - 2012-03-31 05:17:29 - Similar - Report/Block

I was wondering if there was a way to initialize an array out of a variable from a struct. Say you have a struct like this- struct Test{ int Number; And you wanted to initialize the int Number to become an array. I've already tried this, and it doesn't work: Test t1; t1.Number = new int[3]; t1.Number[3] = 6; I know ISO C++ forbid...

Unexpected Luck (Motivational)

audiojungle.net - 2013-05-17 23:02:41 - Similar - Report/Block

Unexpected Luck is very optimistic, upbeat and cheerful track featuring guitars, synthesizer, drums, trumpets, trombones and horns. ideal for any project that needs a joyful, fun and positive atmosphere. This download includes both WAV and MP3 versions of the track. Also four loops from different parts of the track. 1. Unexpected Luck M...

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Unsigned int appears as random negative integer after sending with UDP

stackoverflow.com - 2012-03-30 01:35:09 - Similar - Report/Block

I send a struct with one field (unsigned int) to a network emulator and it outputs the unsigned int but it is incorrect. If I do NOT re-run the network emulator, if I resend the struct with the same number, it will be the same random integer. If I send that number +1, I get the random integer -1. If i do re-run the network emulator and re...

How to use C# struct array initiation in C/C++ code?

stackoverflow.com - 2012-03-29 01:01:16 - Similar - Report/Block

Say, if I have the following struct in C#: public struct MyStructCSharp private byte[] offsets = new byte[] { 28, 20, 27, 36 }; How do you do the same in C/C++? The following doesn't seem to work: typedef struct _MyStructCpp _MyStructCpp() { offsets[] = {28, 20, 27, 36}; } private: unsigned char offsets[]; }MyS...

ID3D11ShaderReflection struct field names

gamedev.net - 2013-05-24 02:37:39 - Similar - Report/Block

I'm trying to use the ID3D11ShaderReflection API to basically dump all the constant information about my shaders: the location of every variable and every field in every structure. I'm iterating over each variable in each constant buffer, and when I encounter a variable of type D3D_SVC_STRUCT, I'm trying to iterate over each field. I cann...

'list' undeclared (first use in this function)

stackoverflow.com - 2012-04-26 14:01:27 - Similar - Report/Block

I have below code. I am getting error as Please help me #include <stdio.h> #include <stdlib.h> struct list{ int data; struct list *next; typedef struct list *head; int main() struct list *start; int i; start = (list *) malloc(sizeof(struct list)); printf("\nEnter the data : \n"); scanf("%d", &i); start->data = i;...

c - dereferencing pointer to incomplete type - error with a pointer to a char*

stackoverflow.com - 2012-04-20 17:11:32 - Similar - Report/Block

I have a problem accessing a char* that is in another struct, heres the code: User_Network.c: struct User_Networks_t { SocialNetwork network; typedef struct User_Networks_t* User_Networks; void aaa(User_Networks u1) u1->network->Name = "test"; /// ERROR: dereferencing pointer to incomplete type Here is what I have in the SocialNet...

c++ cocos2dx unexpected unexpected copyWithZone

stackoverflow.com - 2013-04-21 00:12:56 - Similar - Report/Block

I am raising a following duplicate question as i am also facing the same issue. This issue was raised last year but no solution was posted. Please help me on the same. unexpected invoke copyWithZone c++ cocos2d Thanks,...

Copying struct Array into another struct array (GLKVector)

stackoverflow.com - 2013-04-16 14:14:18 - Similar - Report/Block

I try to copy the content of vertexDataTextured ArmandDeBrignac [] array into vertexDataTextured MeshVertexData[] array. But it doesn't work.... I think the problem is in the struct method, there are GLKvector elements..... ? This is my header-File: struct vertexDataTextured GLKVector3 vertex; GLKVector3 normal; GLKVector2 texCoord; ty...

Using the this pointer inside decltype

stackoverflow.com - 2012-06-19 01:42:28 - Similar - Report/Block

Example (compiles fine) struct A void f() {}; auto g() -> decltype(f()) {} Question If add the pointer inside decltype (i.e. decltype(this->f()) ), I get the following compile errors with gcc 4.7.0: error: invalid use of incomplete type 'struct A' error: forward declaration of 'struct A' error: invalid use of incomplete type 's...

Override virtual function through CRTP base class

stackoverflow.com - 2013-02-26 14:26:54 - Similar - Report/Block

Old: How can I override a virtual function through a CRTP base class? struct I { virtual void foo() = 0; }; template struct B { void foo() { } }; // provides implementation of foo in D struct D : I, B { }; // D has an implementation of foo that should override I int main() { D d; } Error: unimplemented pure virtual method 'foo' in 'D' Si...

fib6_rule_lookup invocation

stackoverflow.com - 2012-05-08 14:14:30 - Similar - Report/Block

I have a network module which encapsulate a packet if it's destination is not local or a direct connected network. To do that, I have a function that detects if this packet is local or not. This function is for IPv4 packets and I should duplicate it to do the same for IPv6. The code of the function for IPv4 is: bool is_v4addr_local(struct...

Ambiguous when two superclasses have the function with the same name, but one is a parameter

stackoverflow.com - 2012-04-02 13:08:14 - Similar - Report/Block

struct A { void f(int x) {} struct B { template<typename T> void f(T x) {} struct C : public A, public B {}; struct D { void f(int x){} template<typename T> void f(T x) {} int main(int argc, char **argv) { C c; c.f<int>(3); D d; d.f<int>(3); What is the reason for which calling is f...

18 Shocking GIFs with Unexpected Twist Endings

funnyordie.com - 2013-05-13 23:41:52 - Similar - Report/Block

18 Shocking GIFs with Unexpected Twis... Interesting Fact: Every single one of these GIFs can see dead people. Submitted by: GifGuide Regular Keywords: unexpected gifs twist endings funny gifs LOL gifs hilariously unexpected gifs didn't see that coming best movie twists gifs with a twist GIFs you won't see coming Views: 97,523...

OpenCL kernel argument struct has zero values

stackoverflow.com - 2012-04-06 13:50:40 - Similar - Report/Block

I'm having several problems regarding OpenCL (total noob) but I think that if I manage to solve this one I will be able to solve some of the other. I have the following kernel that I want to store in a double array the a number calculated by the data of a struct. The argument that I pass to the kernel is a struct array and is initialised...

C: 2 different headers define struct udphdr. How to tell GCC to choose one?

stackoverflow.com - 2012-03-21 02:56:26 - Similar - Report/Block

I am working with pcap code and the struct udphdr seems to be defined in two includes. How to tell GCC to use a specific one?...

500 Unexpected Error

creators.ning.com - 2013-04-12 05:08:06 - Similar - Report/Block

My network is experiencing lately the unexpected error page. Here is what happened. I have been getting some new members sign up and I was trying to add someone as a friend and then I got this 500 unexpected error and the friend request was not sent. I don't know if that had anything to do with it or not.

How can I access a struct in csharp that contains dynamic arrays, from an unmanaged DLL?

stackoverflow.com - 2012-03-24 17:18:31 - Similar - Report/Block

-In my c code I have a struct which contains many unknown sized arrays in an unmanaged dll (c code) -I need the data of one instance of this struct marshaled over to c# , which I will later on send back to the unmanaged c code -I do not need to manipulate this data once it gets to csharp, only hold onto it/store it for a while (so it can...

Set struct elements to values within definition

stackoverflow.com - 2013-04-09 09:31:31 - Similar - Report/Block

The compiler seems to have no problem with this. Can I safely assume that any object I create of this type will have these defaults values? struct ColorProperties{ bool colorRed=true; bool colorBlue=false; bool isRectangle=true; }; ColorProperties myProperties; Will myProperties automatically contain element values as noted by the...

Бинарный поиск.как осуществить? - Matlab

cyberforum.ru - 2013-05-14 15:21:10 - Similar - Report/Block

есть массив структур function s=structures %Рез: "s" - в-р struct с полями : f,s,marks - содержит таблицу об студентах и % их успеваемости в каждом семестре в период всего обучения. s(1)=struct('f',{'Первый'},'marks',{{[3, 3,3,3],[3,3,3,3],[3,3,3,3],[3,3,3,3],[3, 3,3,3],[3,3,3,3]}}); s(2)=struct('f',{'Второй'},'marks',{{[4, 4,4,4],[4,4,4,4],...

双方向リストのバブルソートについて

goo.ne.jp - 2013-05-09 07:04:58 - Report/Block

双方向リストをバブルソートを用いてソートしたいです。 下記がプログラム(一部)ですが、ソートした後にリスト表示すると 無限ループに陥ります。 どこがいけないのでしょうか。 #include #include struct cell{ int data; struct cell *next, *prev; void insert_head(struct cell **head, int num){ struct cell *p, *p1; p = *head; p1 = make_cell(); *head = p1; p1-> data = num; p1-> next = p; if(p1-> next != (struct cell *)NULL){...

Guida Utilizzare il sscanf invece dello strtok.

sciax2.it - 2013-05-22 16:00:53 - Similar - Report/Block

Salve, leggendo un po' le guide postate ho notato che nessuno ha mai scritto una guida su come utilizzare lo sscanf al posto dello strtok per interagire con altri player, con stringhe, eccetera, dopo il classico comando. Per iniziare posto qui un esempio di un comando con l'utilizzo dello sscanf, commentato. Spiego dopo bene. Codice: CMD:...

Список (найти ошибку) - С++ для начинающих

cyberforum.ru - 2013-03-16 22:27:24 - Similar - Report/Block

Вот вроде написал программу использующую список. Состоит из 3х элементов, туда просто записываются числа 1 2 3, далее в цикле это все должно выводится. Не могу понять, почему выводятся только цифры 3 и 2, тем более в обратном порядке. Кому не сложно, подскажите где ошибка (нужно чтобы выводилось 1 2 3). Код: #include #include struct list...

Считывание данных из файла - C для начинающих

cyberforum.ru - 2013-03-20 11:07:25 - Similar - Report/Block

В файле funс.dat есть два столбца данных надо считать первый столбец в один массив, второй столбец в другой массив. Вариант когда в файле был 1 столбец данных делал так: Код: static const char filename[] = "func.dat"; FILE *file = fopen ( filename, "r" ); if (file != NULL) char line [128]; /* or other suitable maximum line size */ i...

Программа из 20 строк, синтаксических ошибок нет, но из консоли вылетает. В чем ошибка? - C для начинающих

cyberforum.ru - 2013-04-19 19:27:34 - Similar - Report/Block

Код: #include #include typedef struct sp{ struct el *info; struct sp *link; }sp; typedef struct el{ int str; struct sp *next; }el; int main(){ int a; sp *head; head=NULL; printf("Vvod\n"); scanf("%d",&a); head=(sp*)malloc(sizeof(sp)); head->info->str=a; printf("Otvet\n%d", head->info->str); return 0;...

Не могу разобраться в чем ошибка - С++ для начинающих

cyberforum.ru - 2013-04-09 19:19:42 - Similar - Report/Block

Нужно считать содержимое из файла, отсортировать по именам ,найти средний бал и вывести в новый файл в файле (номер,ФИО,группа,оценки(4)) #include #include #include #include using namespace std; struct zap int num; char fio[40]; char gr[30]; int bal; mas[5]; int file1 (struct zap *mas) int k=0; FILE *f=NULL; f=fopen("C:\file1.txt","rt");...

Задача с бинарным деревом (написать функцию, которая свяжет все узлы на одном уровне:) - С++ для начинающих

cyberforum.ru - 2013-05-13 11:26:55 - Similar - Report/Block

Есть бинарное дерево: Код: struct node int n; // value of node struct node *left; // left subtree struct node *right; // right subtree struct node *level; // level pointer (node “to the right”) Поля инициализированы нулями. Нужно написать функцию, которая свяжет все узлы на одном уровне: Код: void linkSameLevel(struct node *t);...

Двусвязный список - C для начинающих

cyberforum.ru - 2013-04-12 06:41:27 - Similar - Report/Block

Форумчани, у кого есть возможность хотел попросить реализовать одну функцию. Необходимо создать динамический массив с изменяемыми границами используя двусвязный список. Вот сами структуры описал, а функцию в которой бы создался сам масиив динамический не могу написать. Код: // Так я описываю функцию struct intarray * new_array(); #include...

Алгоритм форматного вывода на экран красно-черного дерева - C для начинающих

cyberforum.ru - 2013-04-20 20:01:39 - Similar - Report/Block

Доброго времени суток, форумчане! Прошу помощи в написании кода для вывода на экран элементов красно-черного дерева. структура определена так: Код: struct Node { int key; struct Node *left; struct Node *right; struct Node *parent; char *info; int color; Заранее благодарю всех, кто откликнется.

Сортировка массива структур - C для начинающих

cyberforum.ru - 2013-03-14 10:00:43 - Similar - Report/Block

Добрый день! Столкнулся с проблеммой сортировки массива структур! Вообще программа создаёт массив структур (4 поля) из n элементов. Выводит ввиде таблицы. Сортирует массив по указонному пользователем полю. Сортировка почему-то не работает, или это не правильно работает вывод после сортировки. Помогите пожалуйста. Код: #include #include #i...




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