By Harvey M. Deitel, Paul J. Deitel, Jeffrey A. Listfield, Tem R. Nieto, Cheryl H. Yaeger, Marina Zlatkina
Written as an advent to the recent C#, this advisor takes the skilled C programmer a number of steps past the fundamentals. It covers gadgets, facts kinds, and circulate keep watch over, or even delves into a few heritage at the new Microsoft internet Frameworks setting. conserving in brain that this is often for these acquainted with C (and even Java), the e-book is going into the various complicated positive factors and enhancements present in this new language. It additionally deals a comparability among C#, C++, visible simple, and Java.
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McGraw. Hill. Osborne. Media. Hypertext Preprocessor. A. rookies. consultant. Oct. 2008. ISBN 0071549013-o
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Additional resources for A programmer's introduction to C#
2] Because an abstract class is missing “required” functionality, it can’t be instantiated, which for the example means that instances of the Engineer class cannot be created. So that there are still two distinct types of engineers, the ChemicalEngineer class has been added. - 48 - Abstract classes behave like normal classes except for one or more member functions that are marked as abstract. 0F; // minimum charge. 0F); earray = new ChemicalEngineer("Dr. , has one or more abstract functions), and the addition of abstract before the TypeName() virtual function.
The first function call matches: public void Write(string, object arg) Similarly, the third function passes an object array, and it matches: public void Write(string label, params object args) Things get interesting for the second call. The definition with the object parameter doesn’t match, but neither does the one with the object array. When both of these matches fail, the compiler notices that the params keyword is present, and it then tries to match the parameter list by removing the array part of the params parameter and duplicating that parameter until there are the same number of parameters.
It is often a better design choice to use a protected property. The Engineer class also has a member function that can be used to calculate the charge based on the number of hours of work done. 0F; // minimum charge. 75F)); } } Because the CivilEngineer class derives from Engineer, it inherits all the data members of the class (though the name member can’t be accessed, because it’s private), and it also inherits the CalculateCharge() member function. Constructors can’t be inherited, so a separate one is written for CivilEngineer.
A programmer's introduction to C# by Harvey M. Deitel, Paul J. Deitel, Jeffrey A. Listfield, Tem R. Nieto, Cheryl H. Yaeger, Marina Zlatkina