Question

Using a switch case statement, write a menu driven program to convert a given Temperature from Fahrenheit to Celsius and vice versa. For an incorrect choice an appropriate message should be displayed. c=5/9*(f-32) and f=1.8*c+32​

Answer 1

Question:-

• Using a switch case statement, write a menu driven program to convert a given Temperature from Fahrenheit to Celsius and vice versa. For an incorrect choice an appropriate message should be displayed.

Program:-

import java.util.*;

class Temperature

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.println("1. Celsius to Fahrenheit.");

System.out.println("2. Fahrenheit to Celsius.");

System.out.print("Enter your choice: ");

int n=sc.nextInt();

switch (n)

{

case 1:

System.out.print("Enter the temperature in Celsius scale: ");

double c=sc.nextDouble();

double f=1.8*c+32;

System.out.print("Temperature in Fahrenheit is: "+f);

break;

case 2:

System.out.print("Enter the temperature in Fahrenheit scale: ");

double f=sc.nextDouble();

double c=5*(f-32)/9.0;

System.out.print("Temperature in Celsius is: "+f);

break;

default:

System.out.println("Invalid Choice. Please try again later.

}

}

}

Answer 2

Answer:

/*  a menu driven program to convert a given Temperature from Fahrenheit to Celsius and vice versa:     C++ program */

#include <iostream>

using namespace std;

double fahrenheitToCelsius(double fahren)

{

    double cel;

    cel = (fahren - 32.0) * 5.0 / 9.0;

    return cel;

}

 double CelsiusTofahrenheit (double celsius )

{

   float fahrenheit;

     fahrenheit = (celsius * 9.0) / 5.0 + 32;

       return fahrenheit;

}

int main()

{

     double cel,feh;

int a;

cout<<"1. For Celsius To Fahrenheit. \n";

 cout<<"2. For Fahrenheit To Celsius. \n";

 cout<<"3. For Exit\n\n";

 cout<<"Enter Your Choice \n ";

 cin>>a;

    switch(a)

  {

       case 1: cout<<"Enter The Temperature In Celsius\n";

     cin>>cel;

feh= CelsiusTofahrenheit (cel);

          cout<<"\nTemperature In Fahrenheit Is = "<<feh ;

   break;

   case 2: cout<<"Enter The Temperature In Fahrenheit\n";

     cin>>feh;

      cel= fahrenheitToCelsius(feh);

     cout<<"\nTemperature In Celsius Is = "<<cel ;

   break;

      case 3:exit(0);

     default:cout<<"\nEnter The Right Choice \n";

   break;    

  }

}