===================
C11: Function Calls                                                     [TOC]
===================

- Always make reasonable choices in your C program for your variable types.
- Identifiers used in your implementation should be consistent with the
  pseudo-code.
- In all examples the global variable is initialized with 5.  But try different
  values:

  - Make sure you compute $0!$ correct.
  - What do you noticw if $n!$ is larger than $255$?

Exercise
========
Write a C program that realizes the following pseudo code:

---- CODE(type=txt) ------------------------------------------------------------
Global variable: n = 5

Function factorial(n)
    result <- 1
    for i = 2, ..., n
        result <- result * i

Main program:
    return factorial(n)
--------------------------------------------------------------------------------

Exercise
========
Write a C program that realizes the following pseudo code:

---- CODE(type=txt) ------------------------------------------------------------
Global variable: n = 5

Function factorial(n)
    result <- 1
    while n > 1
        result <- result * n
        n      <- n - 1

Main program:
    return factorial(n)
--------------------------------------------------------------------------------

Exercise
========
Write a C program that realizes the following pseudo code:

---- CODE(type=txt) ------------------------------------------------------------
Global variable: n = 5

Function factorial(n)
    if n > 1
        return n*factorial(n-1)
    else
        return 1

Main program:
    return factorial(n)
--------------------------------------------------------------------------------

Exercise
========
Make experiments with the handout examples.