题解 | 温标转换

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        if(in.hasNextFloat()){
            float t = in.nextFloat();
            float K = -1;
            if(t >= 0 && t <= 100000){
                K = t;
            }else{
                System.out.println("no use!");
                return;
            }
            float F = (K - (float)273.15) * (float)1.8 + 32;
            System.out.printf("%.8f",F);
        } 
    }
}