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任务描述:
解决思路:
一个函数,带入输入的三个边长参数,条件满足计算其周长、面积,否则不计算
代码示例:
- package a4_2024_07;
-
- import java.util.Scanner;
-
- public class j240721_2 {
- public static void main(String[] args) {
- Scanner sc = new Scanner(System.in);
- System.out.println("请输入三角形的3条边 a, b, c :");
- int num01 = sc.nextInt();
- int num02 = sc.nextInt();
- int num03 = sc.nextInt();
- boolean result = method(num01, num02, num03);
- if (result) {
- System.out.println("三条边能构成三角形");
- double perimeter = num01 + num02 + num03;
- double s = perimeter / 2;
- double area = Math.sqrt(s * (s - num01) * (s - num02) * (s - num03));
- System.out.printf("面积为:%.2f", area);
- System.out.println();
- System.out.println("周长为:" + perimeter);
- } else {
- System.out.println("三条边无法构成三角形");
- }
- }
-
- // 判断是否能构成三角形, 任意两边之和大于第三边
- private static boolean method(int num01, int num02, int num03) {
- return num01 + num02 > num03 && num01 + num03 > num02 && num02 + num03 > num01;
- }
- }
-
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