C

C language uses the va_list, va_start, va_end, and va_arg macros to define variable parameter functions Before defining a function with variable parameters, let's first understand the transfer principle of the function parameters: 1. function

Printf output function, printf output The printf function is called the format output function. Format: Printf (const char * _ Format ,...) Printf ("format control string", output table column)The format control string is used to specify the output

CustomURLCache of NSURLCache with download function in Objective-c I recently encountered this problem during iOS APP development: I developed a reading App, and the text interface is implemented through UIWebViewController, now we need to implement

Setjmp in C language standard libraryCoroutine refers to the co-operative routines, which was first proposed and implemented by Melvin Conway in 1963. Unlike threads in mainstream programming languages, threads are intrusive components. The

The principle and structure of the Harman tree (reprinted) This is the process of constructing the Harman tree. 1. Create an initial set {W1, W2, W3 ,..., wi ,..., wn} is the initial set of n Binary Trees. F = {T1, T2, T3 ,..., ti ,..., tn}, where

Study on Automatic Conversion Type of Objective-C KVC# Objective-c kvc automatic conversion type Apple is very kind. During the time of kvc, we made some type conversions and posted the rules for your reference. @ Interface Entity: NSObject @

C language implementation of a calculator Today, I read compilation principles and practices and saw the implementation of a simple Integer Calculator. Based on the ideas in the book, I made some extensions: 1. Extend From Integer Calculator to

Programming Algorithm-Suffix Tree code (C)Suffix Tree code (C) Address: http://blog.csdn.net/caroline_wendy Give you a long string s and a collection of many short strings {T1, T2 ,...}, design a method to query T1, T2 ,..., locate the position of

Strcpy and memcpy programming implementation, strcpymemcpy Programming 1 char * strcpy (char * dest, char * src) 2 {3 char * d = dest; // back up the input parameters 4 char * s = src; 5 6 int count = 0; 7 8 assert (dest! = NULL & src! = NULL); //

Linux network programming 9 -- 2.0 for TCP and UDP simple encapsulation, network programming udp For more information about how to generate a dynamic library and how to use it, see the previous blog. The code for the improved version is listed below.

Use the bloom filter algorithm to process large-scale data filtering. Bloom Filter is a fast search algorithm proposed by Bloom in 1970. It uses multiple hash algorithms to jointly determine whether an element is in a set. It can be used to

* Array-01. character conversion, array-01 character conversion 1/* 2 * Main. c 3 * E1-array-01. character conversion 4 * Created on: August 20, 2014 5 * Author: in the Boomkeeper 6 ****** section, *********** 7 */8 9 # include 10 11 int main

Summary of C-difficult and miscellaneous _ Sequence points (2) Question: int I = 3; int B = I ++ * I ++; why is the final result B = 9? Answer: (1) the standard stipulates that the program execution sequence can be arbitrary between two sequence

Objective-C calls Swift If you already have an old iOS app, it is written in Objective-C, and some of its new features need to be written in Swift, then you can call Swift from Objective-C. Objective-C does not need to bridge the header file when

C: TLV message encoding and Common Operations /* 1. TLV Introduction: in the communication system, there must be message interaction between two devices before, and the message format also has various encoding types. This article only describes the

Programming algorithms-food chain and code query (C)Code for checking the food chain (C)     Question: There are N animals numbered 1, 2 ,..., n. all animals belong to one of A, B, and C. it is known that A eats B, B eats C, and C eats. Two types of

C and pointer (pointers on C) -- Chapter 11th: dynamic memory allocation (ii) exercises 1. Compile calloc and use malloc internally. void *calloc (size_t n, size_t size){char * memory;memory =(char*) malloc(n * size);while( memory != NULL){char *

[HDU 1757] A Simple Math Problem (matrix fast power) Question: If x If x> = 10 f (x) = a0 * f (x-1) + a1 * f (X-2) + a2 * f (X-3) + ...... + A9 * f (X-10 );And ai (0 For k and m, evaluate f (k) % m. Solution: F (x) = a0 * f (x-1) + a1 * f (X-2) + a2

C Quick Start series (4) C Quick Start series (4) C language Array --------- Reprinted, please specify the Source: coder-pig Tip: if you cannot see the image, right-click and save it as needed; Note that the above Code should be repeated by

Programming Algorithm-part and question code (C)Part and question code (C)   Question: Given integers a1, a2,..., an, can be used to determine whether a number of numbers can be selected to make the sum of them exactly k.   There are many solutions.