What does computer main mean in computer software?
This article mainly introduces what the computer main refers to in the computer software, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.
Computer main represents the main menu or main class in computer software, some desktop software, there will be a main menu, including the basic operation menu, named main;, while in the development language java, c language and other high-level languages, there will be a main class of main, which is the entrance to program execution.
1. Main represents the main menu or main class in computer software. Some desktop software will have a main menu containing the basic operation menu, named main. In the development language java, c language and other high-level languages, there will be a main class of main, which is the entrance to program execution.
2. The entry of the main function, that is to say, if you program with c, you can find the entry of the program by looking for main (). A program can have multiple functions, but only one main () function.
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It is stipulated that any C++ program contains a main function. The main function is called directly by the system and is the entrance to the execution of the program. (as in C language)
Main functions and user-defined functions are independent modules, that is, functions cannot be nested. Generally speaking, you can not define another function in the body of a function, even in the main function. However, the main function can make calls to user-defined functions (but the main function can only be called by the system). When users define multiple functions, these user-defined functions can all call each other.
The general usage in java is similar to that of c, cantilever, write a simple program:
Public class HelloWorldpublic static void main (String [] args) System.out.println ("hello,java")
The output of this program is: hello,java. This is also the use of main in java. Of course, the general program of java needs the main function, and the program starts with the main function, except for the class applet, which does not need to use the main function.
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