Analysis of the core concept and usage in Leola's programming language
Analysis of the core concept and usage in Leola's programming language
preface:
Leola is an object -oriented programming language, which has the characteristics of simple, flexible and scalability.This article will introduce the core concepts and usage of Leola's programming language, and provide some Java code examples.
1. Variables and data types
Leola supports various data types, including numbers (integer and floating point numbers), string, Boolean values and array.The declaration of variables can use keyword VAR and does not need to specify the data type.
Example:
Var Age = 25; // Accompanying variables
var name = "Zhang San"; // String variable
var isMarried = FALSE; // Boolean variable
var number = [1, 2, 3, 4, 5]; // array
2. Function and method
Leola supports the definition of functions and methods.Function is a reusable code, and the method is a function associated with the object.The definition of functions and methods uses keywords functions, and can accept parameters and return values.
Example:
function sayHello(name) {
print("Hello, " + name + "!");
}
sayhello ("Zhang San"); // Output hello, Zhang San!
3. Control streaming sentences
Leola provides a variety of control streaming sentences, including conditional judgment statements (IF-Art), cyclic statements (for, while), and Break, Continue.
Example:
var age = 18;
if (age >= 18) {
Print ("You're an adult!");
} else {
Print ("You are not yet adult!");
}
var i = 0;
while (i < 5) {
print(i);
i++;
}
Fourth, object -oriented programming
Leola is an object -oriented programming language, supports the definition of class and objects.Class is a template for creating objects.Objects can have attributes and methods.
Example:
class Person {
var name;
var age;
function Person(name, age) {
this.name = name;
this.age = age;
}
function introduce() {
Print ("Hello everyone, I am" + this.name + ", this year" + this.age + "years old."););
}
}
var Person = New Person ("Li Si", 30);
Person.introde (); // Output everyone, I am Li Si, 30 years old this year.
Summarize:
This article introduces the core concepts and usage of Leola's programming language, including variables and data types, functions and methods, control stream sentences, and object -oriented programming.Leola can be used as a simple, flexible and scalable programming language for developing various types of applications.
Java code example:
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
The above is a simple Java program example for output "Hello, World!" To the console.This example shows the basic grammar and usage of the Java language.
