structure

问题 I'm pretty new to php and i'm trying to decide the best way to organize the pages and, using PHP, deliver them. The two (basic) ideas I've had are: A bunch of individual pages all with PHP includes to have the header, footer, and menu. A single main page that has the menu, header, and footer, along with an include for the main content. The page name comes from a variable in the URL. Does anyone have any other suggestions or ideas? This is pretty basic stuff, but figured I'd see if anyone has

问题 this program returns a pointer to a structure . When i print the contents, the name is not being displayed properly, where as the other two variables are being properly printed. What could be the problem? Here is the code in C #include<stdio.h> struct student { char name[20]; int marks; int rank; }; struct student stu; struct student *create(); void main() { struct student *ptr; ptr = create(); printf("%s\t %d\t %d\t",ptr->name,ptr->marks,ptr->rank); } struct student *create() { struct

问题 Question for C only, C++ and vectors do not solve problem. I have such structure: typedef __packed struct Packet_s { U8 head; U16 len; U32 id; U8 data; U8 end; U16 crc; } Packet_t, *Packet_p; ( EDIT : U8 is uint8_t (unsigned char) and so on) For example, I've received packet(hex): 24 0B 00 07 00 00 00 AA 0D 16 1C where head = 0x24 len = 0x0B 0x00 id = 0x07 0x00 0x00 0x00 data = 0xAA end = 0x0D crc = 0x16 0x1C I can copy it from incoming buffer like this U8 Buffer[SIZE]; // receives all bytes

问题 I don't know if this is possible but I'll explain what I need. What I've got: - Table1: A users table - Table2: A table which contains items definitions - Table3: A table which stores for each user, amounts of items (defined in previous table) With this tables structure, what I need to achieve is that when I add a row in Table2 (items definitions), automatically Table3 (users items) updates according to Table2 columns. Example: If I deleted a row in Table2 , this would be the action: What's

问题 Hi I am having difficulties in understanding about how the memory is allocated to the structure elements. For example if i have the below structure and the size of char is 1 and int is 4 bytes respectively. struct temp { char a; int b; }; I am aware that the size of the structure would be 8. Because there will be a padding of 3 bytes after the char, and the next element should be placed in multiple of 4 so the size will be 8. Now consider the below structure. struct temp { int a; // size is 4

问题 Hi I am having difficulties in understanding about how the memory is allocated to the structure elements. For example if i have the below structure and the size of char is 1 and int is 4 bytes respectively. struct temp { char a; int b; }; I am aware that the size of the structure would be 8. Because there will be a padding of 3 bytes after the char, and the next element should be placed in multiple of 4 so the size will be 8. Now consider the below structure. struct temp { int a; // size is 4

问题 I have two structs defined as so (in color.h ): typedef struct rgb { uint8_t r, g, b; } rgb; typedef struct hsv { float h, s, v; } hsv; hsv rgb2hsv(rgb color); rgb hsv2rgb(hsv color); I then have the following in main.c which works: hsv hsvCol = {i/255.0, 1, 1}; rgb col = hsv2rgb(hsvCol); I want to be able to just create the variable hsvCol inside the parameters for hsv2rgb without having to create the variable and passing it as a parameter. I've tried the each of the following (in place of

问题 Suppose that I need to implement at least 5 queues in one procedure, each of it from a different defined type. How can achive this in a simple and short way?. Another way to see the question is the way that came to me: after a lot of time of defining my own structures in fortran, I had to make a program in C++, and then I saw how easy is the use of templates... now, I want the same in my mother tongue.... seems that the knowledge is not always confortable Thanks a lot! 回答1: If you really want

问题 Suppose that I need to implement at least 5 queues in one procedure, each of it from a different defined type. How can achive this in a simple and short way?. Another way to see the question is the way that came to me: after a lot of time of defining my own structures in fortran, I had to make a program in C++, and then I saw how easy is the use of templates... now, I want the same in my mother tongue.... seems that the knowledge is not always confortable Thanks a lot! 回答1: If you really want

问题 I'm working with Intel SGX which has predefined structures. I need to send these structures over a network connection which is operated by using boost::asio . The structure that needs to be send has the following format: typedef struct _ra_samp_request_header_t{ uint8_t type; /* set to one of ra_msg_type_t*/ uint32_t size; /*size of request body*/ uint8_t align[3]; uint8_t body[]; } ra_samp_request_header_t; For the sending and receiving, the methods async_write and async_async_read_some are