Introduction

In this tutorial, we will discuss the user-defined function in Octave. User-defined functions are stored in a separate file with the filename as the function name.

Sample User-defined function

Let’s write a sample function to convert Fahrenheit temperature to Celsius temperature.

  function [Celsius] = FahToCel(Fahrenheit)
% Function: FahToCel.m
% 
Celsius = 5*(Fahrenheit-32)/9;
endfunction

How to invoke?

We can invoke the function with the function name and the pass the parameters.

%Sample Usage
% How to invoke the user defined function
celsius = FahToCel(50);
disp(celsius);