import java.io.*;
import java.util.*;

class  TempConverter{
    public static void main(String[] args)throws Exception{
        Scanner input=new Scanner(System.in);
        System.out.print("Enter temperature in C(0-20): ");
        double temp=input.nextDouble();
        double f=(1.8*temp)+32;
        BufferedWriter bw=new BufferedWriter(new FileWriter(new File("C:/temp.txt")));
        String fahrenheit=Double.toString(f);
        bw.write(fahrenheit);
        bw.close();
        System.out.println("Temperature is converted.");
    }
}

import java.util.Scanner;

public class TempConversion1 { public static void main(String [] args) {

 double celsius=0;
 while(celsius <= 20)
 {
 Scanner scan=new Scanner(System.in);


 System.out.print("Enter the number in celsius:");
 celsius=scan.nextDouble();

 System.out.print("farhe:"+(1.8*celsius+32)+"\n");
 }

}

}