In this question, you will explore a semantic variation of function call and return.
A function can take a variable number of parameters. Such functions are known as varargs or variadic functions. Extend the Funclang language to support variable argument functions with the following syntax:

This syntax (especially … three dots) allows a lambda expression with a variable number of parameters. Parameters of variadic functions are treated as a list in the body of the function. For example, (lambda (x…) (car x)) defines an anonymous function with variable parameters x, where the body of the function returns the first parameter of the function.
A variable number of arguments could be passed when calling a variadic function. For example, in the program ((lambda (x…) (car x)) 8 2 3), the three parameters 8, 2, and 3 are passed to the function.
The program returns the first argument in the list of arguments (i.e., it returns 8):