## Lesson goal: Functions that return values

Previous: Introduction | Home | Next: Convert between Celsius and Fahrenheit

The last lesson showed you how functions can be used to perform the same job over and over again. Sometimes it is useful for a function to return some result back to the main programmed that called it. You can do this by putting a return statement as the last line in your function.

function name(input 1,input 2,...)
BODY
return(some-value)
end
Move the mouse over a dotted box for more information.

Take a look at the default code below (hit [Reload] on your browser to reset the page if needed). It defines a function called add3 that takes in three numbers and adds them together. It then returns their sum back to the main calling line in the program.

#### Now you try. Run and tweak the this code.

Type your code here:

See your results here: