package test;

public class Ha {

public static void main(String[] args){

int sun = 20;

int rain = 12;

int sum = 112;

int avg = 14;

int day = sum / avg;

int sunDay;

sunDay = (sum-day*rain)/(sun-rain);

System.out.println("在这几天内有"+sunDay+"个晴天，有"+(day-sunDay)+"个雨天");

}

}

有的是

同学，下次问问题，记得先百度一下。。。。。。。

package test;

import java.util.Scanner;

public class Ha {

public static void main(String[] args){

Scanner p = new Scanner(System.in);

System.out.println("请输入三条边长：");

System.out.print("第一条边长：");

int a = p.nextInt();

System.out.print("第二条边长：");

int b = p.nextInt();

System.out.print("第三条条边长：");

int c = p.nextInt();

if(a+b>c && a+c>b && b+c>a){

System.out.println("边长为"+a+","+b+","+c+"的三条边能组成三角形");

}else{

System.out.println("边长为"+a+","+b+","+c+"的三条边不能组成三角形");

}

}

}