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This article mainly introduces "how to pass through C# citation". In daily operation, I believe many people have doubts about how to pass through C# citation. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubt of "how to pass through C# citation"! Next, please follow the editor to study!

C # Main () method

C # can contain only one Main () method, and the Main () method specifies where the program starts execution. Note that in C #, Main () starts with an uppercase letter, while Java uses a lowercase main ().

Main () can only return int or void, and there is an optional string array parameter to represent the command line argument:

Static int Main (string [] args) {... Return 0;}

When parameters are passed to a method, they may be passed by value or by reference. Value parameters extract only the values of any variable for use in the method, so the variable values in the calling code are not affected by the actions performed on those parameters in the method.

The referential parameter points to the variable declared in the calling code, so when passed by reference, the method modifies the contents of the variable.

Pass through C# reference

In Java and C #, the method parameters of the reference object are always passed by the C # reference, while the basic data type parameters are passed by value.

In C#, all parameters are passed by value by default. To pass by reference, we need to specify one of the keywords ref or out. The difference between the two keywords lies in the initialization of the parameters. The ref parameter must be initialized before use, while the out parameter does not need to be explicitly initialized before passing, and any previous values are ignored.

Note that when a method uses a reference type as a parameter, the reference itself is passed by value. However, the reference still points to the same object in memory, so any changes made to the properties of the object remain unchanged after the method exits. However, because the reference itself is passed by value, it should instead point to a different object or even a new object within the method, and once the method is executed, the reference will revert to pointing to the original object, even if the original object is unassigned.

At this point, the study of "how to pass through C# quotation" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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