# Programming Fundamentals/Function Examples Java

## Temperature

``` // This program asks the user for a Fahrenheit temperature,
// converts the given temperature to Celsius,
// and displays the results.
//
// References:
// https://www.mathsisfun.com/temperature-conversion.html
// https://en.wikibooks.org/wiki/Java_Programming

import java.util.*;

class Main {
private static Scanner input = new Scanner(System.in);

public static void main(String[] args) {
double fahrenheit;
double celsius;

fahrenheit = getFahrenheit();
celsius = calculateCelsius(fahrenheit);
displayResult(fahrenheit, celsius);
}

private static double getFahrenheit() {
double fahrenheit;

System.out.println("Enter Fahrenheit temperature:");
fahrenheit = input.nextDouble();

return fahrenheit;
}

private static double calculateCelsius(double fahrenheit) {
double celsius;

celsius = (fahrenheit - 32) * 5 / 9;

return celsius;
}

private static void displayResult(double fahrenheit, double celsius) {
System.out.println(fahrenheit + "° Fahrenheit is " +
celsius + "° Celsius");
}
}
```

### Output

```Enter Fahrenheit temperature:
100
100° Fahrenheit is 37.7777777777778° Celsius
```