Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you about the programming languages suitable for the development of desktop software. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

The programming language suitable for the development of desktop software is Category C#, which is an object-oriented programming language derived from C and C++ released by Microsoft. It runs on ".NET Framework" and ".NET Core". It also has strong operation ability, elegant grammar style and innovative language features.

C # language structure

Class: a basic C # class contains data members, properties, constructors, and methods. Properties can be static or instance members. The declaration of a class in C # is very similar to C++ and Java. However, unlike Category structures and classes, it is not supported to inherit multiple parent classes. However, like Java, a structure can implement an interface (interface). The Java keyword import has been replaced with using, which has the same effect.

Classes can be abstract and non-inheritable: a class declared as abstract cannot be instantiated, it can only be used as a base class. The C# keyword lock, like the Java keyword final, declares that a class is not abstract, but it cannot be used as a base class interface to another class: as in Java, an interface is an abstract definition of a set of methods. When a class or structure implements an interface, it must implement all the methods defined in that interface. A single class can implement several interfaces, and there may be some subtle differences later, but this feature does not seem to have changed compared to Java.

Boolean operation: the result of conditional expression is Boolean data type. Boolean data type is an independent data type in this language. There is no direct conversion process from Boolean type to other types. Boolean constants true and false are keywords in C #. Error handling: as in Java, error handling is managed by throwing and catching exception objects.

Memory management: automatic memory garbage collection by the underlying .NET framework.

Interface: is a reference type implemented by other types to ensure that they support certain operations. Interfaces are never created directly and have no actual representation, and other types must be converted to interface types.

An interface defines a contract. The class or structure that implements the interface must abide by its protocol. Interfaces can contain methods, properties, indexers, and events as members.

Strongly typed: C # is a strongly typed language, some of its numerical types can be implicitly converted, others must be explicitly converted, implicitly converted types can only be short-length type conversion growing types, int can be converted to long, float, double, decimal, otherwise must be explicitly converted.

Compilation: the program is directly compiled into a standard binary executable form. However, the source program of C # is not compiled into binary executable form, but an intermediate language (IL), similar to JAVA bytecode. If the previous Hello World program is saved as a

The text file, which is named Hello.cs, will be compiled into an executable program named Hello.exe.

A C # program cannot be compiled directly into a standard binary executable form. Like Java, it is compiled into intermediate code (Microsoft Intermediate Language) and then executed through the virtual machine of the .NET Framework, known as the Common Language Runtime (CLR).

A C # structure is similar to C++ 's structure because it can contain data declarations and methods. However, unlike classes, the C # structure is different from classes and does not support inheritance. However, like Java, a structure can implement an interface.

Precompilation: there are precompiled instructions in C # to support conditional compilation, warning, error reporting and compilation line control. The precompiled instructions available are: # define,#undef,#if,#elif,#else,#endif,#warning,#error,#line.

Without the # include directive, symbols can no longer be assigned with # define statements, so there is no concept of source code substitution-these symbols can only be used in # if and # elif directives. The number (and optional name) in the # line directive can change the line number and the file name of the # warning and # error output.

Operator overloading: some operators can be overloaded, while others cannot. In particular, none of the assignment operators can be overloaded. The monocular operators that can be overloaded are: + -! ~ +-- true false binary operators that can be overloaded are: +, -, *, /,%, &, |, ^, >, = =,! =, >,

=,

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.