The book concludes with two slightly larger examples, which deal with the books many concepts in a larger context. Click here to see the examples. Nemat Compulsory for learning computer concepts. Poul Klausen er uddannet cand. Ud over undervisning har Poul Klausen arbejdet i det private som softwareudvikler dels i perioder som fuldtids systemudvikler og dels parallelt med jobbet som underviser.
Strings Chapter Defining Classes Chapter Text Files Chapter Linear Data Structures Chapter Trees and Graphs Chapter Dictionaries, Hash Tables and Sets Chapter Object-Oriented Programming Principles Chapter High-Quality Programming Code Chapter How to Solve Programming Tasks? Chapter Introduction to Programming with C Bulgarian, The book Introduction to Programming with C is fundamental computer programming book that focuses on the concepts of the computer programming, data structures and algorithms.
Introduction to Programming with Java Bulgarian, The book Introduction to Programming with Java is fundamental computer programming book that focuses on the concepts of the computer programming, data structures and algorithms. Programming for. NET Exceptions Handling. NET implementation Programming Tools for. The book contents: Preface Chapter 1. Digital Signatures and Certificates Chapter 2. Digital Signatures and Certificates in Java Chapter 3. Share this NET development. June 22, at August 16, at January 17, at March 23, at Programming Pearltrees says:.
April 13, at October 9, at Ben says:. March 22, at Dan says:. August 12, at Mounesh says:. Add new XAttribute "nome", p. Add new XAttribute "telefone", p. Add x ; xml. Save "Pessoas.
Equals codigo. First ; if x! The element is edited and saved on the same XML file. Equals pessoa. SetValue pessoa. Save "Student.
Save "Student1. Scenarios 5. All these elements are defined in the main function. Two elements are calculated and written in the console: i the value of the price with discount; and ii the final price of the product. The first thing to do is to receive a number from the console. For that we use the Console. ReadLine method. After that a for loop is created to test if the number can be divided by one of its divisors.
On the end, if the flag is still equal to zero, then we can assume that the number is prime. Parse Console. Write "Number is not Prime. Write "Number is Prime. The algorithm for performing it is composed of the following steps: 1. Get number by the user; 2.
Get the remainder of the number; 3. Sum the remainder of the number; 4. Divide the number by 10; 5. Repeat the step 2 while the number is greater than 0. The program offers a Sum function that receives an array as argument. Using a for loop this function sums all elements of an array object. In the main function the program starts by requesting to the user to give five elements to be added to an array object.
After that, the program class the Sum function and writes the sum on the console. WriteLine "Calcular soma dos elementos de um array" ; Console.
WriteLine "Escreva 5 elementos para o array. Figure 12 provides an overview about the considered scenario. Three customers are added p essi g the i itialize utto. A e a e fo the customer must be provided to add a new item.
If the user wants to remove an item, then the name of customer must be selected in the combobox. In all situations the total number of items is updated. Generic; using System. Data; using System. Linq; using System. Text; using System. Tasks; using System. Count; comboBox1. Insert cnt, textBox1. Text ; textBox1. Add "Ana" ; comboBox1. Add "Paulo" ; comboBox1. Remove comboBox1. The image of this scenario is depicted in Figure Calculate the size of two given strings; 2.
Verify is the second string is contained in the first string; 3. Verify is both strings are equal. NewLine ; textBox1. Compare textBox2. Text, textBox3. AppendText "The strings are equal. Contains textBox3.
AppendText "String2 is contained in String1. AppendText "The strings are different. The layout of the scenario is depicted in Figure The data ase E p esa is composed only with two tables: i companies; and ii employees. Figure 14 — Interacting with databases scenario There are several alternatives to query data from a database.
The first thing to consider is if the query will return just one or multiple values. If it etu s multiple values, there are two good solutions: i use a dataset and a SQLDataAdapter to return all the data directly to the dataset; or ii use a SQLDataReader, which implies that the connection to the database remains opened until there is data to be read.
Both approaches are presented in the code, but the second approach is commented. SqlClient; using System. OK, MessageBoxIcon. Text; cmd. ExecuteScalar ; textBox1. AppendText count. CreateCommand ; command. Text; command. CommandText, con ; dap. WriteXml writer ; textBox1. AppendText writer. AppendText reader. GetValue i. The profit can be positive or negative. In the file below we have two customers with negative profit. A usto e lass as eated to e eive the information from the XML file.
I the last ope atio , a usto e s. This file is espo si le to receive a copy of the customers with negative profit. IO; using System. Load "Customers. Attribute "cod". Value ; c. Attribute "name". Value; c. Attribute "profit". Unsafe Code and Pointers. XML Documentation Comments. Application Domains. Exceptions and Exception Handling.
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