learn c# in one day and learn pdf

After these days of study, really a little thought before the C-learning is too bad now learning C # is not smooth, although a lot of things are familiar, but it is also necessary to see several times to remember, and now are simple things, have not seen the overload and other difficult places. Should make a good effort, yesterday busy all things are more than 11 o'clock, still be learning elder sister scol

storing the value of the data. Because there are many types of numeric values, such as integers, decimals, and so on, the corresponding variables have integer variables, floating-point variables, character-type variables, and so on.Naming rules for identifiers:Identifiers can only have letters, numbers and underscores of three types of characters;The first character must be a letter;Uppercase and lowercase letters are considered to be two different characters.Identifiers can be arbitrarily long

Concepts:. NET and C #.net/dotnet: generally refers to the. NET Framework framework. A platform, a technology. C# (Sharp): A programming language that can develop applications based on the. NET platform. • (*) Java is a platform and a programming language. NET what can do · Desktop application Winform (. NET developed desktop application called Winform application) Internet application ASP.(. NET developed

Today is still watching the tutorial while reading the case study C language ~Just came to meet a trouble, after watching the curtain friends of the discussion only to find a blind spot of their own do not know!1. "=": Indicates assignment!! "= =" means equal!!Force Conversion code type double a=3.14 // define floating-point variable and assign 3.14 to a printf (theinteger portion of "A is%d/n" ( int) a) output: The integer part of a is 3

minimum value is {1}, the sum is {2}, the average is {3}", Max,min,sum,ave);Consolo.readkey ();Exercise: Split the name with "|"String[] names={"Lao Yang", "Old Su"};String Str=null;for (int i=0;i{str+=names[i]+ "|"}Console.WriteLine (Str+names[names.length-1]);Console.readkey ();5. Bubble sortArranges elements in an array in order from small to large or from large to smallInt[] nums={122,,22,33,23,2,34,54,1223}Compares the first element to each subsequent elementSort by special method Array.So

);The program code is executed from the top down lineC # is case-sensitive, case-sensitiveTo enclose a function parameter with ()Note: Single-line Comments (//), Multiline comments (/*/)Course Code:First Console Program1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4 usingSystem.Text;5 usingSystem.Threading.Tasks;6 7 namespaceFirst Console program8 {9 class ProgramTen { One Static voidMain (string[] args) A { - //Console.WriteLine ("Hello, h

\n", a[0]);//18F8DCprintf"%x\n", a);//18F8DCprintf ("%d\n",sizeof(*p));// -printf"%d\n",sizeof(p));//4printf"%d\n",sizeof(p[0]));// -//*p + 1 represents the column pointerprintf"%d\n",sizeof(*p +0));//4//P equivalent a[0], p+1 equivalent a[1]printf"%x\t%x\t%x\n", p, p +1, p +2);//1df7b4 1df7c4 1df7d4printf"%x\t%x\t%x\n", a[0], a[1], a[2]);//1df7b4 1df7c4 1df7d4 for(inti =0; I 3; i++) { for(intj =0; J 4; J + +) { //two-dimensional array elements represent the FApr

. The difference is that building blocks of code is used to initialize all objects uniformly, and to locate the initialization content of different object commonalities. The constructor is the initialization of the corresponding object. This: can be used to represent a reference to the object to which the function belongs. In a nutshell, which object is calling the function where this is located, this represents which object. When defining a function in a class, the function is used interna

VAR keyword can be used with listlist example using the var keyword:1 using System;2 using System.Collections.Generic;4 Class Program5 {6 static void Main ()7 {8 var fish = new list9 fish. ADD ("Catfish"); ADD String 1Ten fish. ADD ("rainbowfish"); 2 Fish. ADD ("Labyrinth Fish"); 3 Fish. Sort (); Sort String List Alphabetically+ foreach (string fishspecies in fish) { Console.WriteLin

As for C + +, delegate is the equivalent of a function pointer, looking at the following code: Class Person { Public person (string name) { This.name=name; } Some properties and methods String name; public void Eat (Food Food); } The person class has a eat method, and for its instance, John, Dick, Harry have their own Eat method Person Zhansan,lisi,wangwu; Zhansan=new person ("John"); Lisi=new person ("Dick"); Wangwu=new person ("Harry"

number is negative, when using the shift character >>, the high-constant 1 is removed, resulting in a minimum of four-bit acquisition, which will not be completed at all. Therefore, the use of >>>, indicating whether positive or negative, both complement 0. In the program flow control statement switch, it features: The switch statement chooses only four types: Byte,short,int,char. There is no order between case and default, first case is executed and no matching case e

positioned in a two-dimensional array, and the three one-dimensional arrays are not defined, so the default address value is null. If the three array is again a single array, then the memory will be divided into a space, this address value will be assigned to a two-dimensional array of one-dimensional array, that is, when you define, memory is not in the memory of the two-dimensional array has been allocated to open up, but re-opened another piece of memoryint[][] arr = new INT[][3]; this defin

Conditions for using GCC under windows1, must be pre-installed GCC this program2, in the environment variable of Windows system path, represents where Windows is looking for programs and related libraries, different paths in path with ";" SegmentationIn Path, add:C:\Qt\Qt5.3.0\Tools\mingw482_32\bin\C:\Qt\Qt5.3.0\5.3\mingw482_32\bin3, open the Command window, enter GCC-V, if you see GCC version prompt on behalf of GCC configuration success4, open QT ge

Day10 Finally: In exception handling, the code that is placed in the finally is the code that is bound to be executed. Typically used to close a resource. try{};finally{} can exist, in which case no catch is an exception that is not handled and must be declared if the exception is not a run-time exception. The exception is reflected in the child parent class overlay: When a subclass overrides a parent class, if a method of the parent class throws an exception, the child class's overri

Learn EF a little summary the first day, learn EF summary the first day Environment: win7, vs2013, SQL server 2008 The following problems are encountered in the progressive model frist instance today: Solution: Create an environment variable, as shown in I will install vs2013 on the E drive, OK, restart vs2013

C ++ experts learn advice and learn with an open mind ~~ [Reprinted], advice and learn modestly 1. Take C ++ as a new language learning (it has nothing to do with C! True .); 2. Read Thinking In

This article focuses on Python parsing and reading pdf file content, including the application of the Learning Library, python2.7 and python3.6 in the Python parsing pdf file Content Library updates, including the Pdfminer library detailed interpretation and application. The main reference is some of the existing blog content, code.The main idea is to first take the form of a project, describe the problem,

Object model. DOM may be a bit intimidating for some readers, and it's rarely used by HTML designers, even by JavaScript programmers, unless a high-end programming task is done. A large number of DOM-intensive uses are complex Java and C + + programs, which may be the reason Dom is considered difficult to learn. Fortunately, it's easy and intuitive to use DOM in JavaScript technology. Now it might be a ru