Question

Write a program read in data from the standard input stream (cin) representing temperature in Fahrenheit. The program will then convert the values into Kelvin (using 5/9 (Fº-32) to convert to Celsius and a difference of 273.15 between Celsius and Kelvin) and print out the new total value.

Convert temperature in Fahrenheit to Kelvin :

Enter temperature in Fahrenheit: 80.33

The temperature in Kelvin is: 300

Write a second program which then does the reverse conversion (using a difference of 273.15 between Celsius and Kelvin, and 9/5 (Cº+32) to convert from Celsius).A typical run and the expected output of your program would look like this:

Convert temperature in Fahrenheit to Kelvin :

Enter temperature in Kelvin: 300

The temperature in Fahrenheit: 80.33

Answer 1

Solution:

First Program:

#include <iostream>

using namespace std;

int main()

{

//declare variables

float kelvin, fahrenheit;

    cout << "Convert temperature in Fahrenheit to Kelvin:\n";

cout << "Enter temperature in Fahrenheit: ";

//read in data from the standard input stream (cin)

cin >> fahrenheit;

//convert temperature into kelvin

kelvin = (5.0 / 9) * (fahrenheit - 32) + 273.15;

//print output

cout << "The temperature in Kelvin is: " << kelvin << endl;

return 0;

}

Output:

Second Program:

#include <iostream>

using namespace std;

int main()

{

//declare variables

float kelvin, fahrenheit;

    cout << "Convert temperature in kelvin to Fahrenheit:\n";

cout << "Enter temperature in Kelvin: ";

//read in data from the standard input stream (cin)

cin >> kelvin;

//convert temperature into kelvin

fahrenheit = (kelvin - 273.15 ) * 9.0 / 5 + 32;

//print output

cout << "The temperature in Fahrenheit is: " << fahrenheit << endl;

return 0;

}

Output:

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