Question

Program must be in JAVA.

Write a program that converts temperature from Celsius to Fahrenheit or vice versa, depending on user's input.

The formula for converting temperature in Celsius to Fahrenheit is,

Fahrenheit = (9/5) * Celsius + 32

The formula for converting temperature in Fahrenheit to Celsius is,

Celsius = (5/9) * (Fahrenheit – 32)

Results should be rounded to two decimal points, e.g., 92.56

Answer 1

import java.util.Scanner;
public class temp {

       public static double celsius_To_Fahrenheit(double degree_C)
       {
       double fahrenheit_Result = (9*(degree_C) / 5) + 32;
       return fahrenheit_Result;
       }

       public static double fahrenheit_To_Celsius(double degree_F)
       {
       double celsius_Result = 5*(degree_F - 32)/9;
       return celsius_Result;
       }

       public static void init(){
       Scanner scan = new Scanner(System.in);
       double result;
       char cont= 'y';
       char type;

       while (cont!='q' && cont!='Q')
       {
       System.out.println("Please enter the degree:");
       double degree = scan.nextDouble();

       System.out.println("Now enter the type of conversion (For Celsius, type 'C'. For Fahrenheit, type 'F')");
       type = scan.next().charAt(0);

       if(type!='c' && type!='C' && type!='f' && type!='F')
       {
       System.out.println("Error! You've entered an invalid conversion type!");
       System.out.println("Please enter a valid selection (Type C for celsius and F for fahrenheit");
       type = scan.next().charAt(0);
       }
       if (type == 'F' || type =='f')
       {
       result = fahrenheit_To_Celsius(degree);
       System.out.println("The conversion of "+ degree+"°F "+ "to Celsius is: " + Math.round(result * 100.0) / 100.0 + "°C");

       }
       if (type == 'C' || type =='c')
       {
       result = celsius_To_Fahrenheit(degree);
       System.out.println("The conversion of "+ degree+"°C "+ "to Fahrenheit is: " + Math.round(result * 100.0) / 100.0 + "°F");
       }

       System.out.println("Would you like to quit? Type 'q' to quit or type any other letter to continue:");
       cont = scan.next().charAt(0);
       }
       scan.close();
       }

       public static void main(String[] args)
       {
       init();
       }
}

Code Image:

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