c++ program to convert fahrenheit to kelvin

#include <iostream>
using namespace std;

double convertFahrenheitToKelvin(double fahrenheit) {
    double kelvin = (fahrenheit + 459.67) * 5 / 9;
    return kelvin;
}

int main() {
    double fahrenheit;
    cout << "Enter temperature in Fahrenheit: ";
    cin >> fahrenheit;

    double kelvin = convertFahrenheitToKelvin(fahrenheit);
    cout << "Temperature in Kelvin: " << kelvin << endl;

    return 0;
}

1. The first step is to include the necessary header file iostream which allows us to use the input/output stream functionality in C++.

2. We declare the using namespace std; statement to avoid having to prepend std:: to all the standard library functions we will be using.

3. Next, we define a function convertFahrenheitToKelvin that takes in a parameter fahrenheit of type double. This function will convert the given Fahrenheit temperature to Kelvin and return the result.

4. Inside the convertFahrenheitToKelvin function, we calculate the value of Kelvin using the formula (fahrenheit + 459.67) * 5 / 9 and store it in the variable kelvin.

5. The convertFahrenheitToKelvin function then returns the value of kelvin.

6. In the main function, we declare a variable fahrenheit of type double to store the user input for the Fahrenheit temperature.

7. We prompt the user to enter the temperature in Fahrenheit using the cout statement and << operator.

8. We read the user input from the console and store it in the variable fahrenheit using the cin statement and >> operator.

9. Next, we call the convertFahrenheitToKelvin function with the fahrenheit variable as an argument and store the returned value in the variable kelvin.

10. Finally, we output the converted temperature in Kelvin using the cout statement and << operator.

11. The main function returns 0 to indicate successful execution of the program.