Question

Programming Language: C#

1. We all know that water can exist in solid, liquid and gaseous form. Using Visual Studios Write a program that inputs the temperature for water in degrees Celsius, converts the temperature to degrees Fahrenheit according to the formula F = 9.0/5.0 * C + 32.0 and then prints both temperatures to a list box, message box or text box(s). In addition, the program will print the form of water (solid, solid or liquid, liquid, liquid or gas, gas.) at that temperature under normal conditions on earth.

For example: if 30 degrees C is entered the output will be: 30 degrees Celsius equals 86 degrees Fahrenheit. Water at this temperature is a liquid.

NOTE:

• Water can be liquid or solid at 0.0 degrees C
• Water is solid at temperatures less than 0.0 degrees C
• Water can be a liquid or gas at 100 degrees C
• Water is a gas at temperatures greater than 100.0 degrees C

Test the program with the following temperatures C: -5.5, 0.0, 50.0, 100.0, and 110.

Answer 1

The code for the temperature conversion into Fahrenheit from Celcius is as below :

 using System;                                        public class Program {         public static void Main()       {               Console.WriteLine("Enter temperature in Celcius: ");            float cel = float.Parse(Console.ReadLine());    // taking user input of celcius                                 float far = (9.0f/5.0f)*cel + 32.0f;                            Console.WriteLine(cel +" degrees Celsius equals " + far + " degrees Fahrenheit.");                              if (cel < 0.0)               {                       Console.WriteLine("Water is solid at this temperature");                }               else if(cel == 0.0)             {                       Console.WriteLine("Water can be liquid or solid at this temperature");          }               else if(cel>0.0 && cel < 100.0)           {                       Console.WriteLine("Water is liquid at this temperature");               }               else if(cel==100.0)             {                       Console.WriteLine("Water can be liquid or gas at this temperature");            }               else            {                       Console.WriteLine("Water is gas at this temperature");          }       } }

This code will run for the input temperature -5.5 as :

Enter temperature in Celcius: -5.5 -5.5 degrees Celsius equals 22.1 degrees Fahrenheit. Water is solid at this temperature

This code will run for the input temperature 0.0 as :

Enter temperature in Celcius: 0.0 0 degrees Celsius equals 32 degrees Fahrenheit. Water can be liquid or solid at this temperature

This code will run for the input temperature 50.0 as :

Enter temperature in Celcius: 50.0 50 degrees Celsius equals 122 degrees Fahrenheit. Water is liquid at this temperature

This code will run for the input temperature 100.0 as :

Enter temperature in Celcius: 100.0 100 degrees Celsius equals 212 degrees Fahrenheit. Water can be liquid or gas at this temperature

This code will run for the input temperature 110.0 as:

Enter temperature in Celcius: 110.0 110 degrees Celsius equals 230 degrees Fahrenheit. Water is gas at this temperature

Summary:

Hence the above code in C# will run as desired for all the inputs.