Using only the techniques and methods taught in CS$110,$ write a C$++$ program that acts as a

temperature converter and weather classifier. The program must prompt the user to choose a unit

of measurement for the temperature by typing in the letter corresponding to the desired unit: $c$

or $C$ for Celsius and $f$ or $F$ for Fahrenheit. If the user types a different letter, the program should

display an error message and exits. After selecting the desired unit, the program should prompt

the user to enter a temperature in the selected unit, and convert it to the opposite unit: if the

user selects c or C then the program must convert the entered temperature to Fahrenheit, and if

the user selects $f$ or $F$ then the program must convert the entered temperature to Celsius. After

converting the temperature, the program must classify it according to the following six categories,

and display the appropriate class label:

"Humid" if the converted temperature is greater than $35C,$ or $95F$

"Hot" if the converted temperature is between to $35C,$ or to $95F]$

"Mild" if the converted temperature is between to $\{$:$29C],$ or to $85F]$

"Cool" if the converted temperature is between to $18C,$ or to $65F]$

"Cold" if the converted temperature is between to $9C,$ or to $49F]$

"Freezing" if the converted temperature is less than or equal to $0C,$ or $32F$

For example, one run might look as follows:

Enter a unit of measurement for the temperature: C

Enter a temperature: $20$

The temperature $20$ in Celsius is equivalent to $68$ in Fahrenheit

The weather is: Mild

As part of your answer, include a sub$-$function, called FahrenheitToCelcius, that takes one pa$-$

rameter and converts a temperature to Celcius. Include another sub$-$function, called CelciusTo$-$

Fahrenheit, that takes one parameter and converts a temperature to Fahrenheit. Include another

sub$-$function, called WeatherClassifier that takes two parameters and classifies the converted tem$-$

perature according to the above$-$mentioned ranges, and prints out the appropriate class label.

For converting Celsius to Fahrenheit:

$F=(9\mathrm{.}0**\frac{C}{5})+32$

For converting Fahrenheit to Celsius:

$C=5\mathrm{.}0**\frac{F-32}{9}$

Question: $(1$ Mark$)$

What type of functions are FahrenheitToCelsius, CelciusToFahrenheit, and WeatherClassifier? Ex$-$

plain your answer.