8. 함수

• Optional Function Scope: You can use keyword local to limit the scope the function or ignore the scope section which will make it a global function.

• Function Name: This is the actual name of the function. The function name and the parameter list together constitute the function signature.

• Arguments: A argument is like a placeholder. When a function is invoked, you pass a value to the argument. This value is referred to as actual parameter or argument. The parameter list refers to the type, order, and number of the arguments of a method. Arguments are optional; that is, a method may contain no argument.

• Function Body: The method body contains a collection of statements that define what the method does.

• Return:In Lua, it is possible to return multiple values by follwing the return keyword with the comma separated return values.

--[[ function returning the max between two numbers --]]

function max(num1, num2)

   if (num1 > num2) then

      result = num1;

   else

      result = num2;

   end

   return result; 

end

print("The maximum of the two numbers is",max(10,4))