What does computer main mean?

Computer main represents the main menu or main category in computer software. Some desktop software will have a main menu, including basic operation menus, named main; in high-level languages ​​such as development languages ​​​​java and c language, there will be a main class, which is the entrance to program execution. A program can have multiple functions, but there can only be one main() function.

The operating environment of this article: Windows 7 system, Dell G3 computer.

1. Main represents the main menu or main category in computer software. Some desktop software will have a main menu, including basic operation menus, named main. In high-level languages ​​such as development languages ​​​​java and c language, there will be a main class, which is the entrance to program execution.

2. Main function entrance, that is to say, if you use C programming, you can find the program entrance by looking for main(). A program can have multiple functions, but there can only be one main() function

Extended information

Any C program contains a main function, this is a rule. The main function is directly called by the system and is the entry point for program execution. (Same as in C language)

The main function and the user-defined functions are independent modules, that is, functions cannot be nested. In layman’s terms, you cannot define another function within the function body of one function. function, even within the main function. However, the main function can call user-defined functions (but the main function can only be called by the system). When users define multiple functions themselves, these user-defined functions can call each other.

The general usage in java is similar to c and c. Write a simple program:

public class HelloWorld
public static void main（String[ ] args）
System.out.println("hello,java");

The output of this program is: hello, java. This is also the usage of main in java. Of course, general Java programs require the main function, and the program starts executing from the main function. Except for the applet class, the main function is not required.

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