tombstone summary

;int b;Char *str;int *ptr;PTR = a; PTR-A, PTR save-a addressprintf ("%d\n", PTR);printf ("%d\n", a);b = (int) ptr;printf ("%d\n", b);str = (char *) B;STR-B, because B is int,str is a string, so you want to castprintf ("%d\n", str);PTR = (int *) c;printf ("%d\n", PTR);printf ("%d\n", c);/**************************Other people's suggestion data structure bar, algorithm onlyis eternal, programming language endless, never learn. After the study, I'll chew it carefully.Under the STL this bone bar, re

Common categories in joomla2.5 are summarized. Common classes in joomla2.5 are summarized. joomla2.5 class summary the previous article only studies the JImage class. Today, we continue to use other commonly used joomla built-in classes. I write them from the perspective of common classes, if the joomla2.5 function in PHP is frequently used for class summarization, joomla2.5 Class Summary The previous arti

Summary of essential knowledge for python learning, and summary of essential knowledge for python I. Variables1. Variables• Variable amount during Program Execution;• Defining a variable is accompanied by three features: Memory ID, data type, and variable value.• Before running other languages, you must manually release the program's memory space. However, the python interpreter comes with a memory reclaim

Summary of the mechanism provided by Model metadata and summary of model metadata 　　At the very beginning, I have to talk about this part of the situation. At the beginning, I was dizzy by various ModelMetadata and various ModelMetadataProvider. It took me a lot of time to read several pages, after looking at a class chart, I will take a closer look at the relationships between classes and read this part ag

Ignore the previous minor attacks. This project is my first project-scnu's Android client for Internet public course selection. The project started in middle May and went through several weeks of examination review. Now it can be said that it has been completed (maybe there are some details to modify ). This project has brought me a lot of experience, including Android Development and others, so it is necessary to write a summary. The project's Stor

HTML summary and html knowledge Summary Knowledge points: HTML refers to Hyper Text Markup Language) HTML framework structure: Here is the label content HTML attributes: Class = "XXX": Element class name, used for CSS positioning Id = "XXX": Element id, used for CSS positioning Style = "XXX": Specifies the color, center, width, and border of the element. Title = "XXX" Alt = "XXX": image loading erro

Compatible with antique IE summary and antique ie Summary IE6 has been killed. Of course, 7, 8, 9, and 10 are also suspended. Microsoft has made another effort to stop updating IE11. I thought the front-end could write the code with peace of mind. However, some stubborn elements still use IE6 and respect the principle of "customer first", so they are disgusted with providing him with old antiques. Internet

MySQL database optimization summary, mysql database Summary I. Considerations for MySQL database Optimization 1. Database Design (rational table design) Three Paradigm (Standard Model) The three paradigms include: Paradigm 1: 1NF is a constraint on the atomicity of attributes. It requires attributes to be atomic and cannot be decomposed. (As long as it is a relational database) Second paradigm: 2NF is the u

Javascript Bubble sorting summary and javascript bubble Summary Bubble Sorting example, two-way Bubble sorting and slightly improved visualization of two-way Bubble sorting. The code is very simple. I don't know if there are any unknown bugs.Please do not speak out Bubble sort example var ls=[ 98,13,6,25,38,36,30,44,38,80,61,28,47,34,95,18,85,58,89,85,42,61,74,35,13,14,80,7,10,44,10,47,13,11,52,25,24,48,34,

JQuery Parse XML method summary, jqueryxml Summary This example summarizes JQuery's XML parsing method. We will share this with you for your reference. The details are as follows: Parsing XML data with JavaScript is a common programming task. JavaScript can do it, And JQuery can certainly do it. Below we will summarize several examples of using JQuery to parse XML. Solution 1: Solution 2: The general step

Location. href user summary, location. href Summary *. Location. href usage:Top. location. href = "url" opens the url on the top-level page (jump out of the Framework)Self. location. href = "url" only opens the url address on this pageParent. location. href = "url" opens the Url address in the parent window.This. location. href = "url" is used in the same way as self.If (top. location = self. location) dete

Excellent Source Code summary, source code Summary 1,Cloud album(Author: Steven) (Note: The title is hyperlink) This project is a cloud album that supports registration and login based on face recognition and sharing. The login module adopts two login methods: Face ++-Based Face Recognition login, another method is to log on based on the account and password of the Bmob database. Comments: This projec

Summary of daily css skills (1) -- Changes in background transparency do not affect the content. css Summary When an error occurs at the beginning, the content will be affected by the change in background transparency: Code: Solution 1: Add a div to div. wrap. As a mask, you can set a change style for its transparency and make the content absolutely positioned relative to the wrap. Remember to set a relat

Summary of calling python in C language and summary of python in C Language Recently, I am working on a vulnerability presentation platform. The attack implementation part is implemented using python, And the C language implementation part uses the libcli library for a telnet-like implementation. The python module is called when the callback function is run. I made a demo for calling python in c. Python mo

Linux Command summary and linux Summary Yesterday, a friend asked me about Linux. Today, I will summarize the Linux commands. File Operation command: Cd: Switch Directories Ls: displays the file or file name. Ls-a: Show Hidden Files Ls-l, ll + Folder: displays the content in the folder Ls-al: Show Hidden Files Ls-alt: sort by Time Cp: Copy command cp a.txt/mnt to copy a.txt to/mnt Mv: Move (CUT) mv a.txt/mn

Java proxy summary, java Summary I learned the Java proxy on the Internet and took notes and summarized the code. I. Purpose of Using proxy 1. method call of a route to a remote server 2. Associate User Interface events and actions during the program running 3. Call methods for debugging and tracing 2. Classes and interfaces required for proxy implementation include: 1. Proxy class used to generate Proxy

Swift keyword summary and swift keyword Summary There are four common keywords: Declaration-related keywords: class, deinit, enum, extension, func, import, init, let, protocol, static, struct, subscript, typealias, and var. Statement-related keywords: break, case, continue, default, do, else, fallthrough, if, in, for, return, switch, where, and while. Expression and type Keyword: as, dynamicType, is, ne

Summary of required sites for front-end development and summary of required sites for development Common Front-end manual: Http://caniuse.com/ Http://www.w3school.com.cn/ Http://www.runoob.com/ Http://www.css88.com/ Pre-compiled official website: Http://www.1024i.com/demo/less/ Http://lesscss.cn/ Http://www.sass.hk/ Http://sass-lang.com/ Official website of common class library frameworks: Https://plugins.j

Oracle -- SQL syntax summary and oraclesql syntax Summary -- Statement block declare v_name varchar2 (30): = 'jack' -- defines the variable begin select v_name from dual; exception when others then dbms_output.put_line ('exception occurred '); end; -- if judge declare v_num1 number; v_num2 number; v_result varchar2 (10); begin if v_num1 is null or v_num2 is null then v_result: = 'undefined'; elsif v_num1>

JAVA big value problem summary, JAVA numerical problem summary Big value problems: If the precision of the basic integers (such as int and long) and floating-point numbers is not satisfactory, you can use java. the math package contains two classes: BigInteger (integer of any precision) and BigDecimal (floating point of any precision ). These two classes can realize the numerical value of a person's length