Task - TypeScript - Data types and Functions

[akash-coded]

Task Description

You are tasked with creating a program that converts temperatures between Fahrenheit, Celsius, and Kelvin. Your program should allow the user to input a temperature and the unit it is in, and then output the temperature in the other two units.

Requirements

• The program should prompt the user for the temperature and unit using the prompt() function.
• The program should then convert the temperature to the other two units using functions.
• You should use the following formulas for the temperature conversions:
  • Fahrenheit to Celsius: (temperature - 32) * 5/9
  • Celsius to Fahrenheit: (temperature * 9/5) + 32
  • Celsius to Kelvin: temperature + 273.15
  • Kelvin to Celsius: temperature - 273.15
  • Fahrenheit to Kelvin: (temperature + 459.67) * 5/9
  • Kelvin to Fahrenheit: temperature * 9/5 - 459.67
• The program should output the converted temperatures using the console.log() function.
• The program should also perform input validation to ensure that the user enters a valid temperature and unit. You can assume that the user will enter a number for the temperature and one of the following units: "F", "C", or "K".
• You should use TypeScript to define the types of the input and output parameters for the functions.

Example Output

Enter temperature: 32
Enter unit (F/C/K): C
The temperature in Fahrenheit is 89.6 degrees.
The temperature in Kelvin is 305.15 degrees.

Tips

• You can use the switch statement to handle the different units.
• You can define the function types using TypeScript interfaces.

Submission

Submit your solution as a TypeScript code.

[bipin-coded]

Typescript Code

let temp: number = +prompt("Enter temperature:");
let unit: string = prompt("Enter unit (F/C/K):");

console.log("Enter temperature: " + temp);
console.log("Enter unit (F/C/K): " + unit);

switch(unit) {
   case 'F': { 
	console.log("The temperature in Celsius is "+ ((temp - 32) * 5/9) +" degrees.");
	console.log("The temperature in Kelvin is "+ ((temp + 459.67) * 5/9) +" degrees.");
      break; 
   } 
   case 'C': { 
	console.log("The temperature in Fahrenheit is "+ ((temp * 9/5) + 32) +" degrees.");
	console.log("The temperature in Kelvin is "+ (temp + 273.15) +" degrees.");
      break; 
   } 
   case 'K': { 
	console.log("The temperature in Celsius is "+ (temp - 273.15) +" degrees."); 
	console.log("The temperature in Fahrenheit is "+ ((temp * 9/5 - 459.67) +" degrees.");
      break; 
   } 
   default: { 
      console.log("Please enter a valid unit of measure!");
      break; 
   } 
} 

Output

[RevathiSundaramoorthy]

Code

let inputTemp: number = 0;
let inputUnit: string = '';
inputTemp = parseFloat(prompt("Enter the temperature:"));
inputUnit = prompt("Enter the unit for the temperature(F/C/K):");
if (isNaN(inputTemp) == false) {
    let tempStr: string = inputUnit.toUpperCase();
    if ((tempStr == 'F') || (tempStr == 'C') ||(tempStr == 'K')) {
        tempConversion(inputTemp,tempStr);
    }
    else {
        console.log ("Please enter a valid input unit(F/C/K)");
    }
}    
else {
    console.log ("Please enter a valid temperature")
}    
function tempConversion(temp1: number, temp1Unit: string) {
    let temp2: number = 0; 
    let temp3: number = 0;
    switch (temp1Unit) {
        case "F": {
            temp2 = (temp1 - 32) * 5/9;
            temp3 = (temp1 + 459.67) * 5/9;
            console.log ("The temperature in Celsius is " + temp2 + " degrees");
            console.log ("The temperature in Kelvin is " + temp3 + " degrees");
            break;
        }
        case "C": {
            temp2 = (temp1 * 9/5) + 32;
            temp3 = temp1 + 273.15;
            console.log ("The temperature in Fahrenheit is " + temp2 + " degrees");
            console.log ("The temperature in Kelvin is " + temp3 + " degrees");
            break;
        }
        case "K": {
            temp2 = (temp1*9/5) - 459.67;
            temp3 = temp1 - 273.15;
            console.log ("The temperature in Fahrenheit is " + temp2 + " degrees");
            console.log ("The temperature in Celsius is " + temp3 + " degrees");
            break;
        }
    }
}

Screenshot

[SathyaGanes]

TypeScript Code

function convertCelsiusToFahrenheit(temperature: number): number {
  return (temperature * 9/5) + 32;
}

function convertCelsiusToKelvin(temperature: number): number {
  return temperature + 273.15;
}

function validateTemperature(temperature: string): number | undefined {
  const parsedTemperature = parseFloat(temperature);
  if (isNaN(parsedTemperature)) {
    console.error('Invalid temperature input: not a number');
    return undefined;
  }
  return parsedTemperature;
}

function validateUnit(unit: string): string | undefined {
  if (unit !== 'F' && unit !== 'C' && unit !== 'K') {
    console.error('Invalid unit input: must be "F", "C", or "K"');
    return undefined;
  }
  return unit;
}

const temperatureInput = prompt('Enter temperature:');
const unitInput = prompt('Enter unit (F/C/K):');

const temperature = validateTemperature(temperatureInput);
const unit = validateUnit(unitInput);

if (temperature !== undefined && unit !== undefined) {
  let convertedTemperature: number | undefined;
  switch (unit) {
    case 'F':
      convertedTemperature = convertCelsiusToFahrenheit((temperature - 32) * 5/9);
      break;
    case 'C':
      convertedTemperature = convertCelsiusToFahrenheit(temperature);
      break;
    case 'K':
      convertedTemperature = convertCelsiusToFahrenheit(temperature - 273.15);
      break;
  }
  if (convertedTemperature !== undefined) {
    console.log(`The temperature in Fahrenheit is ${convertedTemperature.toFixed(2)} degrees.`);
  }
  
  switch (unit) {
    case 'F':
      convertedTemperature = (temperature + 459.67) * 5/9;
      break;
    case 'C':
      convertedTemperature = temperature + 273.15;
      break;
    case 'K':
      convertedTemperature = temperature;
      break;
  }
  if (convertedTemperature !== undefined) {
    console.log(`The temperature in Kelvin is ${convertedTemperature.toFixed(2)} degrees.`);
  }
}

[SathyaGanes]

Enter temperature: 25
Enter unit (F/C/K): C
The temperature in Fahrenheit is 77.00 degrees.
The temperature in Kelvin is 298.15 degrees.

[Ruchiarth]

// The program should prompt the user for the temperature and unit using the prompt() function.

let tinput:string = prompt("Enter temperature");
let temp:number = parseFloat(tinput);

let unit_input:string  = prompt("Enter Unit K/F/C");
// let unit:string = toLowerCase(unit_input);
let unit: string = unit_input.toLowerCase();

// console.log(tinput);
// console.log(temp);
// console.log(unit);

switch(unit){
    case 'k':
        console.log("The temperature in Faranheit is "+(temp * 9/5 - 459.67));
        console.log("The temperature in Celsius is "+(temp - 273.15));
        break;

    case 'f':
        console.log("The temperature in Kelvin is "+((temp + 459.67)*5/9));
        console.log("The temperature in Celsius is "+((temp - 32) * 5/9));
        break;

    case 'c':
        console.log("The temperature in Faranheit is "+((temp * 9/5) + 32));
        console.log("The temperature in Kelvin is "+(temp + 273.15));
        break;
    
     default: { 
      console.log("Please enter a valid unit of measure!");
      break; 
   } 
}

screenshot

[kumarneeraj89]

let tempreturein = prompt("Enter tempreture: ");
let tempretureuniit = (prompt("Please tempreture unit F or C or K: "));

function FahrenheittoCelsius( tempreturein: number, ): number {
  return (tempreturein-32) * 5/9
}

function CelsiustoFahrenheit( tempreturein: number, ): number{
    return (tempreturein * 9/5) + 32
  }

  function CelsiustoKelvin( tempreturein: number, ): number{
    return (tempreturein + 273.15)
  }

  function KelvintoCelsius( tempreturein: number, ): number{
    return (tempreturein - 273.15)
  }

  function FahrenheittoKelvin( tempreturein: number, ): number {
    return (tempreturein + 459.67) * 5/9
  }

  function KelvintoFahrenheit( tempreturein: number, ): number {
    return (tempreturein * 9/5) - 459.67
  }
switch(tempretureuniit){
case "F" : {
  console.log(`The temperature in Celsius is ${FahrenheittoCelsius(tempreturein)} degrees. & The temperature in Kelvin is ${FahrenheittoKelvin(tempreturein)} degrees.`);
  break;
  }
case "C" : {
  console.log(`The temperature in Fahrenheit is ${CelsiustoFahrenheit(tempreturein)} degrees. & The temperature in Kelvin is ${CelsiustoKelvin(tempreturein)} degrees.`);
  break;
  }
case "K" : {
  console.log(`The temperature in Fahrenheit is ${KelvintoFahrenheit(tempreturein)} degrees. & The temperature in Celsius is ${KelvintoCelsius(tempreturein)} degrees.`);
  break;
  }

  default :{
    console.log("Not a valid Entry")
  }
}

[sam2elect]

CODE

type TemperatureUnit = "F" | "C" | "K";

function convertTemperature(temperature: number, fromUnit: TemperatureUnit, toUnit: TemperatureUnit): number {
  if (!isValidTemperature(temperature)) {
    throw new Error("Invalid temperature. Please enter a valid number.");
  }

  if (!isValidTemperatureUnit(fromUnit) || !isValidTemperatureUnit(toUnit)) {
    throw new Error("Invalid temperature unit. Please enter either F, C or K.");
  }

  let result: number;

  switch (fromUnit) {
    case "F":
      switch (toUnit) {
        case "C":
          result = (temperature - 32) * 5 / 9;
          break;
        case "K":
          result = (temperature + 459.67) * 5 / 9;
          break;
        default:
          result = temperature;
      }
      break;
    case "C":
      switch (toUnit) {
        case "F":
          result = temperature * 9 / 5 + 32;
          break;
        case "K":
          result = temperature + 273.15;
          break;
        default:
          result = temperature;
      }
      break;
    case "K":
      switch (toUnit) {
        case "F":
          result = temperature * 9 / 5 - 459.67;
          break;
        case "C":
          result = temperature - 273.15;
          break;
        default:
          result = temperature;
      }
      break;
    default:
      result = temperature;
  }

  return result;
}

function isValidTemperature(temperature: number): boolean {
  return !isNaN(temperature) && temperature !== null && temperature !== undefined;
}

function isValidTemperatureUnit(unit: TemperatureUnit): boolean {
  return unit === "F" || unit === "C" || unit === "K";
}

const temperature = 32;
const fromUnit: TemperatureUnit = "F";
const toUnit: TemperatureUnit = "C";

const result = convertTemperature(temperature, fromUnit, toUnit);
console.log(`${temperature}${fromUnit} is equal to ${result}${toUnit}`);

OUTPUT