Defining functions

A function is a piece of code that does a very specific operation. Defining functions in the ImageJ macro language is simple. You just need to use the function keyword, followed by the function name. A function may receive as many arguments as desired and may or may not return a value. Consider the following function:

functiongetMax(a, b) {
  if (a > b) {
    return a;
  }
  else{
    return b;
  }
}
print(getMax(5, 4));
print(getMax(5, 6));

As you can see from the previous example, the function definition does nothing by itself. In order to execute it, it needs to be called.