Question

Temperature Conversion Menu (100 pts)

The three common temperature scales are Celsius, Fahrenheit and Kelvin. The conversion formulae for each of the scales is shown below (where °C, °F and K represent the temperatures in degrees Celsius, degrees Fahrenheit and Kelvin respectively):

Celsius to Fahrenheit: °F = (9.0/5) ´ (°C) + 32

Celsius to Kelvin: K = °C + 273.15

Kelvin to Celsius: °C = K – 273.15

Kelvin to Fahrenheit: °F = (9.0/5) ´ (K – 273.15) + 32

Fahrenheit to Celsius: °C = (5.0/9) ´ (°F – 32)

Fahrenheit to Kelvin: K = (5.0/9) ´ (°F – 32) + 273.15

Write a program that can convert the temperature using the given formulae.

Your code should:

1. Generate a menu for displaying the menu conversion options.

• Menu should be displayed using a void method that accepts no parameters
• Choices are:          1 – convert from Celsius to Fahrenheit

2 – convert from Celsius to Kelvin

3 – convert from Kelvin to Celsius

4 – convert from Kelvin to Fahrenheit

5 – convert from Fahrenheit to Celsius

6 – convert from Fahrenheit to Kelvin

7 – quit the program

2. Ask the user to select a value (from the menu above) that indicates their choice:

• Use a while loop to ensure that the user only enters a value between 1 and 7. (In other words, force the user to re-enter the value if the values are outside that range).

3. Ask the user to enter the temperature if the selection is between 1 and 6.
   • Make sure to initialize temperature to 0 when you declare it.

4. Perform the necessary conversion based on the selection that was made.

• The selections should be managed by a switch statement
• Cases 1-6 in the switch statement should then redirect to a conversion method that performs the calculations. Each method here should be a value returning method that accepts 1 parameter (the temperature) and returns a value.
  • Case 1 should include a method call for converting Celsius to Fahrenheit
  • Case 2 should include a method call for converting Celsius to Kelvin
  • Case 3 should include a method call for converting Kelvin to Celsius
  • Case 4 should include a method call for converting Kelvin to Fahrenheit
  • Case 5 should include a method call for converting Fahrenheit to Celsius
  • Case 6 should include a method call for converting Fahrenheit to Kelvin
  • Case 7 does not require a method; only an output to indicate that the program is ending. (No default case is needed)
• Note: NONE of your value returning methods should prompt the user for the temperature (as this would have already been done in part 3).

5. Loop from step 1, using a do while loop which would allow the user to enter another option. The program should only end when the user presses 7. (In other words, the loop runs while the choice is not equal to 7.)

Samples of the output are shown below. (Note, match the wording as closely as possible and accomplish the same tasks.)

Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 8
Invalid entry. Renter choice: 1
Enter the temperature: 100
100.0 degrees Celsius is 212.0 degrees Fahrenheit


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 2
Enter the temperature: 0
0.0 degrees Celsius is 273.15 Kelvin


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 3
Enter the temperature: -40
-40.0 degrees Fahrenheit is -40.0 degrees Celsius


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 4
Enter the temperature: 70
70.0 degrees Fahrenheit is 294.26111111111106 Kelvin


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 5
Enter the temperature: 100
100.0 Kelvin is -173.14999999999998 degrees Celsius


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 6
Enter the temperature: 100
100.0 Kelvin is -279.66999999999996 degrees Fahrenheit


Please select an option below (1 to 7):
1. Convert from Celsius to Fahrenheit
2. Convert from Celsius to Kelvin
3. Convert from Kelvin to Celsius
4. Convert from Kelvin to Fahrenheit
5. Convert from Fahrenheit to Celsius
6. Convert from Fahrenheit to Kelvin
7. Quit
Enter choice: 7
Ok bye!

Answer 1

Following java program provides menu driven program to convert temperature in one unit to another based on choice.

PFB source code with sample output.

Note : No language was specified, so wrote in java.

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TemperatureConversion.java
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import java.util.Scanner;

public class TemperatureConversion {

public static double celsiusToFahrenheit(double temperature){
//Celsius to Fahrenheit: °F = (9.0/5) ´ (°C) + 32

return ((9.0/5)*temperature+32);

}

public static double celsiusToKelvin(double temperature){
//Celsius to Kelvin: K = °C + 273.15
return (temperature + 273.15);

}

public static double kelvinToCelsius(double temperature){
//Kelvin to Celsius: °C = K – 273.15
return (temperature - 273.15);   

}

public static double kelvinToFahrenheit(double temperature){
//Kelvin to Fahrenheit: °F = (9.0/5) ´ (K – 273.15) + 32
return ((9.0/5) * (temperature-273.15) + 32);

}

public static double fahrenheitToCelsius(double temperature){
//Fahrenheit to Celsius: °C = (5.0/9) ´ (°F – 32)
return ((5.0/9)*(temperature-32));

}

public static double fahrenheitToKelvin(double temperature){
//Fahrenheit to Kelvin: K = (5.0/9) ´ (°F – 32) + 273.15
return ((5.0/9)*(temperature-32)+273.15);

}
public static void menu(){

int choice;
double temperature=0;

Scanner sc = new Scanner(System.in);

do{
  
System.out.println("\n\n");
System.out.println("Please select an option below (1 to 7):");
System.out.println("1 - Convert from Celsius to Fahrenheit");
System.out.println("2 - Convert from Celsius to Kelvin");
System.out.println("3 - Convert from Kelvin to Celsius");
System.out.println("4 - Convert from Kelvin to Fahrenheit");
System.out.println("5 - Convert from Fahrenheit to Celsius");
System.out.println("6 - Convert from Fahrenheit to Kelvin");
System.out.println("7 - Quit the program");

System.out.print("Enter choice: ");
choice = sc.nextInt();

while(choice<1 || choice>7){
  
System.out.print("Invalid entry. Renter choice: ");
choice = sc.nextInt();

}
if(choice<=6){
System.out.print("Enter the temperature: ");
temperature = sc.nextDouble();
}

double convertedTemperature;

switch(choice){

case 1: convertedTemperature = celsiusToFahrenheit(temperature);
System.out.println(temperature + " degrees Celsius is " + convertedTemperature + " degrees Fahrenheit");
break;
case 2: convertedTemperature = celsiusToKelvin(temperature);
System.out.println(temperature + " degrees Celsius is " + convertedTemperature + " Kelvin");
break;
case 3: convertedTemperature = kelvinToCelsius(temperature);
System.out.println(temperature + " Kelvin is " + convertedTemperature + " degrees Celsius");
break;
case 4: convertedTemperature = kelvinToFahrenheit(temperature);
System.out.println(temperature + " Kelvin is " + convertedTemperature + " degrees Fahrenheit");
break;
case 5: convertedTemperature = fahrenheitToCelsius(temperature);
System.out.println(temperature + " degrees Fahrenheit is " + convertedTemperature + " degrees Celsius");
break;
case 6: convertedTemperature = fahrenheitToKelvin(temperature);
System.out.println(temperature + " degrees Fahrenheit is " + convertedTemperature + " Kelvin");
break;
case 7: System.out.println("Ok bye!");
return;
}
}while(true);

}

public static void main(String[] args) {

//calling menu
menu();

}
}
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sample output
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Let me know, if you face any issue.