Beginning C# 2008 Objects: From Concept to Code (Expert's by Grant Palmer

By Grant Palmer

Updated with the alterations to C#, Beginning C# 2008 items: From strategies to Code introduces entire newcomers to C# coding perform with an outstanding methodological beginning written through critically–acclaimed specialists within the box, already authors of the best–selling Beginning C# Objects.

By development from first rules in object–oriented terminology, then advancing via program layout with Unified Modeling Language (UML) into functional examples, Beginning C# 2008 items: From thoughts to Code offers a foundational advisor written from the point of view of 2 skilled, operating professionals on C#.

Working coders will enjoy the object–oriented forged of the publication and its part on use–case modeling. this can be the booklet to learn for you to deepen and develop your current specialist improvement in C# with a watch in the direction of advancing out of natural coding work.

For the reader wishing to “simply research C#”, this ebook will supply precisely that. as well as directory code and syntax, Beginning C# 2008 gadgets: From thoughts to Code additionally walks you thru the layout and architecting of a functioning C# software, exhibiting the “why” and the “how” of the improvement judgements that cross into expert C# coding.

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Beginning C# 2008 Objects: From Concept to Code (Expert's Voice in .Net)

Up to date with the adjustments to C#, starting C# 2008 items: From strategies to Code introduces whole novices to C# coding perform with an effective methodological origin written by way of critically–acclaimed specialists within the box, already authors of the best–selling starting C# items. via development from first ideas in object–oriented terminology, then advancing via program layout with Unified Modeling Language (UML) into useful examples, starting C# 2008 gadgets: From thoughts to Code presents a foundational advisor written from the point of view of 2 skilled, operating experts on C#.

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Extra info for Beginning C# 2008 Objects: From Concept to Code (Expert's Voice in .Net)

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Although the preceding if statement doesn’t even compile in C#, it does compile in the C and C++ programming languages because in those languages, if tests are based on evaluating expressions to either the integer value 0 (equivalent to false) or nonzero (equivalent to true). It’s possible to nest if-else constructs to test more than one condition. If nested, an inner if (plus optional else) statement is placed within the else part of an outer if. A basic syntax for a two-level nested if-else construct is shown here: if (condition1) { // execute this code } else { if (condition2) { // execute this alternate code } else { // execute this code if none of the conditions are met } } 21 22 CHAPTER 1 ■ A LITTLE TASTE OF C# There is no limit to how many nested if-else constructs can be used, but try not to go too crazy with nesting.

When the 'if' block exits, the variable 'discount' goes out of scope, // and is no longer recognized by the compiler. If we try to use it // in a subsequent statement, the compiler will generate an error. double refund = cost * discount; } // this won't compile - discount is // no longer in scope } In the preceding example, a variable named cost is declared inside the block of code comprising the Main method body. Another variable named discount is declared inside the block of code associated with the if statement.

The condition is a logical expression that typically involves the loop control variable: for (int i = 0; i < 5; iterator) { // code to execute as long as i is less than 5 } The iterator typically increments or decrements the loop control variable: for (int i = 0; i < 5; i++) { // code to execute as long as i is less than 5 } Again, note the use of a semicolon (;) after the initializer and condition, but not after the iterator. Here’s a breakdown of how a for loop operates: • When program execution reaches a for statement, the initializer is executed first (and only once).

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