Ngày tải lên: 11/08/2014, 21:20
Pointer in C
... s->comment = (char *)malloc(sizeof(char[strlen(comm)+1])); strcpy(s->comment, comm); free(s); This code creates a lost block because the structure containing the pointer pointing ... This code is really useful only for demonstrating the process of allocating, deallocating, and using a block in C. The malloc line allocates a block of memory of the size specified in this case, ... structures. An example is shown below: typedef struct { char name[21]; char city[21]; char state[3]; } Rec; typedef Rec *RecPointer; RecPointer r; r = (RecPointer)malloc(sizeof(Rec));...
Ngày tải lên: 16/08/2012, 11:09
... instance of TcpListener listens for TCP connection requests and creates a new socket (in the form of a TcpClient or Socket instance) to handle each incoming connection. 2.3.1 TCP Client A TCP client ... access to a NetworkStream to abstract the sending and receiving of data. Constructors public TcpClient(); public TcpClient(IPEndPoint localEP); public TcpClient(string hostname, int port); Creates ... the TCP echo client with a graphical interface. TcpClient Summary Description TcpClient provides simple methods for connecting to, sending, and receiving data over a TCP connection. The TcpClient...
Ngày tải lên: 17/08/2012, 08:39
Expert Service Oriented Architecture in C Sharp
... with excellent preparation for working with WCF in the future. This chapter contains the following: ã Overview of WCF architecture, including the Indigo service layer, the WCF connector, hosting ... service files and the code-behind that directly relates to verifying and relaying incoming messages (but excludes actual business logic). The .asmx files should delegate the business processing ... specifications and to aggregate them and record them in the WSDL document. Introducing the WS- Specifications We introduce you to the WS- specifications again in Chapter 5, and then cover them in...
Ngày tải lên: 20/08/2012, 13:57
Expert Service Oriented Architecture in C Sharp Using the Web Services Enhancements
... 2:52 PM Page 1 Introducing Service-Oriented Architecture 7 Services provide flexible binding: Services fully describe themselves using the WSDL contract. This information includes documentation ... files and the code-behind that directly relates to verifying and relay- ing incoming messages (but which excludes actual business logic). The .asmx files should delegate the business processing ... to Indigo very smoothly. The summary of the chapters is as follows: Chapter 1, “Introducing Service-Oriented Architecture”: This chapter introduces the concepts behind service-oriented architecture,...
Ngày tải lên: 20/08/2012, 13:59
Questions to .NET and Programming in C#
... when the object is accessed. c) A static constructor can have public as a accessibility modifiers 74. class A { public static int X = B.Y + 1; } class B { public static int Y = A.X ... explicitly or implicitly. b) Static constructors can have accessibility modifiers. e) Static constructors are called when the class is loaded. c) Static constructors cannot be called ... error. c) Incompatible type for ’=’ can’t convert SubClass to SuperClass. b) No constructor matching SuperClass() found in class SuperClass d) Wrong number of arguments in constructor....
Ngày tải lên: 21/08/2012, 15:55
Questions to .NET and Programming in C#
... implementing an abstract class. [1.0] a) public abstract void class ClassA c) abstract public ClassA b) public abstract class ClassA 105. Which of the following methods can be called ... ("MyDll.MyOName" ) object myObject = System.Activator .C reatInstance (myObjectType) b) By using the System.Reflection. CreateInstance() method to create an instance of object in the following manner. ... In Finally 187. Imagine that you have two .cs files. The alpha.cs file contains a class called Alpha that contains an internal method called Method. The beta.cs file contains a class called...
Ngày tải lên: 29/08/2012, 16:37
Question Bank Introduction to .NET and Programming in C#
... is called automatically when the object is accessed. c) A static constructor can have public as a accessibility modifiers 74. class A { public static int X = B.Y + 1; } class B { public static ... value c) get b) set d) find 100. public class A:B ,C, D{ } The above code represents ______ [0.5] a) multilevel interface c) multiple interface b) hierarchical interface d) multiple inheritance 101. ... False 25. Access Modifiers for variables in C# can be the following (Select all that apply) [1.0] a) Public c) Private b) Protected d) Public protected 26. In C# , an underscore is allowed as an initial...
Ngày tải lên: 09/04/2013, 09:10
6.087: Practical Programming in C
... some basic code profiling to examine the effects of explicitly declaring variables as registers. Consider the fibonacci sequence generating function fibonacci in prob1 .c, which is reproduced at ... 0 ; } Hint: In order to count words, count the transitions from non-white space to white space characters. 5 main .c: dict .c: dict.h: #include <stdio.h> #include "dict.h" ... Electrical Engineering and Computer Science 6.087: Practical Programming in C IAP 2010 Problem Set 3 – Solutions Control flow. Functions. Variable scope. Static and global variables. I/O: printf...
Ngày tải lên: 25/04/2013, 08:07
Object Semantics in C++CLI
... OBJECT SEMANTICS IN C+ +/CLI 55 Copy Constructors Copy constructors take a tracking reference (%) as a parameter, as shown in Listing 4-15. Listing 4-15. Using Tracking References with Copy Constructors // ... objects in code. You saw the semantic differences between these methods, including objects with heap and stack semantics, tracking references, dereferencing handles, copying objects, gc-lvalues, ... returning tracking references to local variables is not a good idea in C+ +/CLI since the destructor is called for local variables, leaving the caller with a reference to a destructed object. Instead,...
Ngày tải lên: 05/10/2013, 08:20
Editing Files in Place
... shell. g/\\;/s/\\;/\\\;/g g/\\:/s/\\:/\\\:/g g/\\[/s/\\[/\\\[/g g/\\]/s/\\]/\\\]/g g/\\^/s/\\^/\\\\^/g g/\\\`/s/\\\`/\\\\\`/g 180 CHAPTER 25 ■ EDITING FILES IN PLACE This large section of replacements demonstrates the search character being specified by containing it within the square brackets. The replacement ... in Chapters 36 and 37. Escaping Special Characters in a File The following is a short script to escape all the special characters in a file that is specified from the command line. The script ... node1.somedomain.com alias1.somedomain.com 172.16.5.2 node2 node2.somedomain.com alias2.somedomain.com 172.16.5.4 node3 node3.somedomain.com alias3.somedomain.com The following command searches for occurrences...
Ngày tải lên: 05/10/2013, 08:51
Creating User Interfaces in JavaFX
... box shown in Figure 3-4, in which you can choose a starting row, starting column, and word orientation. 46 firstPress: Creating User Interfaces in JavaFX Creating a MenuBar Widget Listing 3-2. ... Creating User Interfaces in JavaFX WordGridRect class also holds constants associated with the appearance of a cell (e.g., DRAGGING_LOOK and SELECTED_LOOK). An instance of the WordListsView class, ... in WordSearchMain.fx requires direct access to an instance of four of these classes. In Listing 3-3, which contains the first few lines of the WordSearchMain.fx file, you’ll see how these JavaFX classes...
Ngày tải lên: 05/10/2013, 12:20
Functions _ Program Components in C++
... Programmer-defined header files #include myheader.h ã Library header files #include <cmath> 2003 Prentice Hall, Inc. All rights reserved. 7 Method Description Example ceil( x ) rounds ... program examples 2003 Prentice Hall, Inc. All rights reserved. 15 3.7 Header Files ã Header files contain Function prototypes Definitions of data types and constants ã Header files ending with ... <iostream>4 5 using std::cout; 6 using std::endl;7 8 #include <iomanip> 9 using std::setw; 11 #include <cstdlib> // contains function prototype for rand 14 int main() { 16 int frequency1 =...
Ngày tải lên: 06/10/2013, 08:20
eCommerce-Selling New Value: Creating Business Cases in an Uncertain Environment.
... eCommerce-Selling New Value Creating Business Cases in an Uncertain Environment 3 A business case generally consists of three components. Business Model Financial Model Data ... there compelling value? $ B-A Health Services: CareFirst Example eCommerce initiatives for existing businesses focus on cost reduction and revenue enhancement. Approach 3: Existing Business ... Interest: ã Banking balance inquiry ã Banking transactions ã Securities alerts ã Securities transactions ã Mobile eCommerce ã Web content delivery Chip Card: ã Security ã Payments ã Reload eCash 23 Several...
Ngày tải lên: 18/10/2013, 11:15
Introduction to Design Patterns in C#
... Writing Windows C# Programs 47 Objects in C# 47 Managed Languages and Garbage Collection 48 Classes and Namespaces in C# 48 Building a C# Application 49 The Simplest Window Program in C# ... system. Characters and strings in C# are always 16 bits wide: to allow for representation of characters in non-Latin languages. It uses a character coding system called Unicode, in which thousands ... Program to an interface and not to an implementation. Putting this more succinctly, you should define the top of any class hierarchy with an abstract class or an interface, which implements...
Ngày tải lên: 18/10/2013, 17:15