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删除 'w1'

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yuangandong 1 month ago
parent
commit
2620fca6ca
  1. 37
      w1

37
w1

@ -1,37 +0,0 @@
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class TemperatureConverter{
public static double c2f(double c){return c*9/5+32;}
public static double f2c(double f){return (f-32)*5/9;}
public static void conv(String s){
s=s.trim();
if(s.isEmpty()){System.out.println("输入为空,跳过。");return;}
String[]a=s.split("\\s+");
try{
double v=Double.parseDouble(a[0]);
String u=a.length>1?a[1].toUpperCase():"C";
if(u.startsWith("C"))System.out.printf("%.1f°C=%.2f°F%n",v,c2f(v));
else if(u.startsWith("F"))System.out.printf("%.1f°F=%.2f°C%n",v,f2c(v));
else System.out.println("未知单位:"+u);
}catch(Exception e){System.out.println("格式错误:"+s);}
}
public static void batch(String f){
try(Scanner sc=new Scanner(new File(f))){
System.out.println("批量转换:"+f);
int i=0;
while(sc.hasNextLine()){i++;System.out.print("第"+i+"行:");conv(sc.nextLine());}
System.out.println("转换完成");
}catch(FileNotFoundException e){System.out.println("文件不存在");}
}
public static void main(String[]a){
if(a.length==0){
Scanner sc=new Scanner(System.in);
System.out.print("输入温度(如36.6C):");
conv(sc.nextLine());
sc.close();
}else if(a.length==2)conv(a[0]+" "+a[1]);
else if(a.length==1)batch(a[0]);
else System.out.println("用法:\n1.java TemperatureConverter\n2.java TemperatureConverter 36.6 C\n3.java TemperatureConverter file.txt");
}
}
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