primitive support of variadic arguments

README.md

@@ -23,6 +23,7 @@
 	- [Control Strucutres](#control-strucutres)
 	- [Function](#function)
 	- [Variable](#variable)
+		- [Built-in Variable](#built-in-variable)
 	- [Pipes](#pipes)
 	- [Garbage Collection](#garbage-collection)
 	- [Modules](#modules)
@@ -296,7 +297,7 @@ You can also pass arguments to the entry point function by defining it with para
 ```awk
 @pragma entry main;
 function main(arg1, arg2) {
-    print "Arguments:", arg1, arg2
+	print "Arguments:", arg1, arg2
 }
 ```
 
@@ -315,6 +316,25 @@ This flexibility in specifying the entry point can be useful in various scenario
 - Testing and Debugging: When working on specific parts of your script, you can temporarily set the entry point to a different function, making it easier to test and debug that particular functionality.
 - Integration with Other Systems: If you need to embed Hawk scripts within a larger application or system, you can use the `@pragma entry` feature to specify the function that should be executed as the entry point, enabling better integration and control over the script execution flow.
 
+If you don't know the number of arguments in advance, you can use the ellipsis `...` in the parameter list and access the varidic arguments using `@argv()` and `@argc()`.
+
+```awk
+@pragma entry main;
+function main(...) {
+	@local i
+	for (i = 0; i < @argc(); i++) printf("%d:", @argv(i))
+	print ""
+}
+```
+
+In this example, the `main` function can accept variable number of arguments.
+
+```sh
+$ hawk -f main.hawk 10 20 30 40 50
+```
+
+The expected output of the above command is `10:20:30:40:50:`.
+
 It's important to note that if you don't define an entry point function using `@pragma entry`, Hawk will default to the standard awk behavior and execute the `BEGIN` block first, followed by the pattern-action blocks, and finally the `END` block.
 
 Overall, the @pragma entry feature in Hawk provides you with greater flexibility and control over the execution flow of your scripts, allowing you to tailor the entry point to your specific needs and requirements.