题解 | 温标转换

import java.util.Scanner;
import java.math.BigDecimal;
import java.math.RoundingMode;

// 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 scanner = new Scanner(System.in);
        double k = scanner.nextDouble();
        double c = k - 273.15;
        double f = c * 1.8 + 32;
        BigDecimal h = BigDecimal.valueOf(f);
                // 四舍五入到小数点后6位（满足误差要求）
        BigDecimal result = h.setScale(9, RoundingMode.DOWN);
        System.out.println(result);
    }
}