main()中的C,C ++,Java和C# [英] main() in C, C++, Java, C#
问题描述
时的main()(或主())在C,C ++,Java或C#,用户定义的函数或内置函数?
Is main() (or Main()) in C, C++, Java or C#, a user-defined function or a built-in function?
推荐答案
这是一个用户定义的函数,是必要的程序执行。当你在编译语言运行你的程序中,主
功能是指在执行什么。例如,在Java中,如果你有可以执行的类中的一类,然后签名公共静态无效的主要(字符串参数... args)
的功能,作为JVM将执行的内容主
方法。
It's a user-defined function that is necessary for a program to execute. When you go to run your program in the compiled language, the main
function is what is executed. For instance, in Java, if you have a function of the signature public static void main(String ... args)
in a class then that class can be executed, as the JVM will execute the contents of that main
method.
例在Java中:
public class Test {
public static void main(String ... args) {
System.out.println("Hello World");
}
}
...
javac Test.java
...
java Test
在Hello World的结果被打印到控制台上。
Results in "Hello World" being printed to the console.
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