kotlin 程序入口_Kotlin程序找到圆的区域

缺乏、安全感 2023-03-05 10:59 32阅读 0赞

kotlin 程序入口

Given radius of the circle, we have to find the area of circle.

给定圆的半径，我们必须找到圆的面积。

**Example:**

**例：**

Input:
        Radius: 3
    
        Output:
        Area of circle: 28.259999999999998

To **find the area of the circle**, we use the formula: π r2.

为了**找到圆的面积** ，我们使用公式： πr 2 。

Here,

这里，

*  π stands for PI which is a mathematical constant and it's value of 3.14, it defined as the ratio of a circle’s circumference to its diameter and it also has the various equivalent definitions.
    
    π代表PI ，它是一个数学常数，其值为3.14，它定义为圆的周长与其直径之比，并且还具有各种等效定义。
 *  r is the radius of the circle.
    
    r是圆的半径。

### 程序在Kotlin查找圆的区域 **(**Program to find area of circle in Kotlin**)** ###

package com.includehelp.basic
    
    import java.util.*
    
    // PI Constant Value
    val PI = 3.14
    
    /* function to calculate area of circle of given radius */
    fun getAreaOfCirlce(radius: Double): Double {
        return PI * radius * radius
    }
    
    // Main Method Entry Point of Program
    fun main(args:Array<String>){
        val sc = Scanner(System.`in`)
        
        // Input Radius
        println("Enter Circle Radius  : ")
        val radius = sc.nextDouble()
        
        // Call function to get Area of Circle
        val areaOfCircle = getAreaOfCirlce(radius)
        
        // Print Area of Circle
        println("Area of Circle : $areaOfCircle") 
    }

**Output**

**输出量**

Run 1:
    Enter Circle Radius  :
    3
    Area of Circle : 28.259999999999998
    -----
    Run 2:
    Enter Circle Radius  :
    8
    Area of Circle : 200.96

> 翻译自: [https://www.includehelp.com/kotlin/find-area-of-circle.aspx][https_www.includehelp.com_kotlin_find-area-of-circle.aspx]

kotlin 程序入口

[https_www.includehelp.com_kotlin_find-area-of-circle.aspx]: https://www.includehelp.com/kotlin/find-area-of-circle.aspx