C

Recursive Implementation of itoa functions (implementation of second-level pointers) and recursive pointer of itoa FunctionsProblem proposal In C Programming Language, two functions are reserved for recursion. the itoa function is used to convert an

ObjectiveC development tutorial -- basic operations on strings  // 1. NSString /* ---------------- Method for creating strings ----------------*/ // 1. Create a constant string. NSString * astring = @ This is a String !; // 2. Create an empty

(Conversion) Difference between front ++ and back ++ When I read the document "google c ++ programming style" today, 5.10. Pre-auto-increment and auto-increment: one sentence caught my attention: Use the prefix format for the iterator and other

How to Use fputs () fgets () in C language, fputsfgets1. The fgets function of the string reading function reads a string from a specified file to a character array. The function is called in the form of fgets (character array name, n, file pointer);

Lua (basic) and lua Basics At the beginning, why should we understand the LUA language? Because WOW macros and even plug-ins cannot be written without LUA! To be good at it, you must first sharpen the tool. If you want to play World of Warcraft,

P2p chat and linuxp2p chat in Linux Implementation Details of p2p chat in Linux Do one thing at a time, and do well. Today, I am free to write a P2P point-to-point chat program. I think it is useful for beginners of network programming. Let's not

Time functions used and summarized by C library functions, summary functions of c library functions   1. localtime (obtain the current local time and date) [Header file] # include [Function prototype] struct tm * localtime (const time_t * timep ); [

IO multiplexing and signal driving, io Multiplexing Signal Linux provides many interfaces for Multiplexing I/O, including select (), pselect (), and poll (). These interfaces are inherited from the BSD and System V factions. The select model is

PAT 05-tree 7 File Transfer, pat05- This question made me stunned by the results of the selection of different data structures. At the beginning, I used the structure to store the collection. The courseware was ready-made and I was not very familiar

C language dynamic planning _ Doing Homework (HDU 1074)   DescriptionIgnatius has just come back school from the 30th ACM/ICPC. now he has a lot of homework to do. every teacher gives him a deadline of handing in the homework. if Ignatius hands in

Indispensable Windows Native (3), windowsnative [Download source code]Indispensable Windows Native (3)-C language: operators, expressions, conditional statements, cyclic statements, steering statements, empty statements, etc. Author:

Review C language-File Operations # Include # Include Int main () {char buf [64] = "hello word! "; // Open the FILE to read the FILE information. Output/* FILE * fp = fopen ("./file1 "," r "); if (! Fp) {perror ("An error occurred

Prime Number distance problem, prime number distance /* The description now gives you some numbers. You need to write a program, output the adjacent prime numbers of these integers, and output their respective lengths. If there is a prime number

C Language -- struct, C language --I. struct 1. Definition of struct Variables * Struct can be composed of multiple different types of data. * Struct Person {int age; double height; char * name}; // first defines the struct type, which has three

Common Subsequence --- Longest Common Subsequence and longest Common SubsequenceProblem DescriptionA subsequence of a given sequence is the given sequence with some elements (possible none) left out. given a sequence X = another sequence Z = is a

Environment Monitoring System Based on zigbee and tiny4412 Development Board, zigbeetiny4412 1. Build the Development Board Environment 　　1. layout of tiny4412 linux Reference blog: http://www.cnblogs.com/luoxiang/p/4186391.html 2. boa Server

Program-C language details 15 (preprocessing command details # error, operator # And #, _ FILE _, _ LINE __)Main Content: preprocessing command details # error, operator # And #, _ FILE _, _ LINE __ # Include /* Contains this header file,

Analysis of object-c Programming tips-kvokvcKVC key-value encoding 1, Overview KVO, that is, Key-Value Observing, provides a mechanism. When the attribute of a specified object is modified, the object will receive a notification. It plays a major

Objective-C memory management I understand When I started to learn iOS, I already had the ARC feature. So I started to learn it in the ARC environment. Although I have some knowledge about memory management, however, I did not seriously deal with

I wrote a few notes about the blind spots in my C language. I only thought that I had experienced and had errors. 1. What is the logical expression value? Expression 1: expression 2; for example, x = y> z? Y: z 2. The priority of logical operators