CSIS 312: Lab 3

TempConv.cpp

#include <iostream>
#include <string>
#include <cmath>

using namespace std;

// Implement Temperature conversion from Celsius to Fahrenheit and Fahrenheit to Celsius

int main(int argc, char const *argv[])
{
    double celsius, fahrenheit;
    char choice;
 
    cout << "Enter the temperature in Celsius: ";
    cin >> celsius;
 
    cout << "Enter the temperature in Fahrenheit: ";
    cin >> fahrenheit;
 
    cout << "Enter the conversion type (C to F or F to C): ";
    cin >> choice;
 
    if (choice == 'C' || choice == 'c')
    {
        fahrenheit = (celsius * 9 / 5) + 32;
        cout << "The temperature in Fahrenheit is: " << fahrenheit << endl;
    }
    else if (choice == 'F' || choice == 'f')
    {
        celsius = (fahrenheit - 32) * 5 / 9;
        cout << "The temperature in Celsius is: " << celsius << endl;
    }
    else
    {
        cout << "Invalid choice" << endl;
    }
    return 0;
}

tempconv.java

public class Main {

    /**
     * Convert from F to C and C to F using --f or --c
     */
    public static void main(String[] args) {
        
        // If args is empty, exit
        if (args.length == 0) {
            System.exit(-1);
        }


        // If args[0] is --f, convert from F to C
        if (args[0].equals("--f")) {
            if (args.length == 2) {
		System.out.println("F: " + args[1]);
                System.out.println("C: " + convertFtoC(Double.parseDouble(args[1])));
            } else {
                System.out.println("Invalid number of arguments");
            }
        }

        // If args[0] is --c, convert from C to F
        if (args[0].equals("--c")) {
            if (args.length == 2) {
		System.out.println("C: " + args[1]);
                System.out.println("F: " + convertCtoF(Double.parseDouble(args[1])));
            } else {

                System.out.println("Invalid number of arguments");
            }
        }
    }


    /**
     * Convert from F to C
     */
    public static double convertFtoC(double f) {
        return (f - 32f) * 5f / 9f;
    }


    /**
     * Convert from C to F
     */
    public static double convertCtoF(double c) {
        return (c * 9f / 5f) + 32f;
    }
}

tempconv.py

import sys

def ftoc(val):
    return float((val - 32) * 0.5556)

def ctof(val):
    return float((val * float(1.8)) + float(32))

def main():
    args = sys.argv[1:]
    if len(args) != 0:
        if args[0] == "-f":
            print(f"C:{ftoc(float(args[1]))}")
            print(f"F:{args[1]}")
        elif args[0] == "-c":
            print(f"F: {ctof(float(args[1]))}")
            print(f"C: {args[1]}")
        else:
            print("No flags provided.")
    else:
        print("No args provided")
main()

TempConv.sh

#!/bin/bash

# temperature convert from celsius to fahrenheit and fahrenheit to celsius

# if there are no arguments, print usage
if [ $# -eq 0 ]
then

    # print usage
    echo "Usage: $0 [celsius|fahrenheit] [number]"

    # exit with error
    exit 1
fi

# if the first argument is celsius
if [ $1 = "celsius" ]
then
    # convert the second argument to fahrenheit
    echo "Fahrenheit: $(($2 * 9 / 5 + 32))"

elif [ $1 = "fahrenheit" ]
then
    # convert the second argument to celsius
    let var=$2-32
    echo "Celsius: $(($var * 5 / 9))"

else
    # print usage
    echo "Usage: $0 [celsius|fahrenheit] [number]"

    # exit with error
    exit 1
fi