lectures/INCLASS_functions_more_complex.ipynb

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    "These exercises will allow you to test your understanding of **functions** in Python."
   ]
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    "# Write a function that *either* adds or subtracts two numbers based on a boolean variable you pass in.\n",
    "#\n",
    "# The input should be:\n",
    "# * The first number\n",
    "# * The second number\n",
    "# * A variable called \"subtract\". If subtract is True, subtract the second number from the first. \n",
    "#                                 If it is False, then add the two numbers\n",
    "# ** Give subtract the default value of False\n",
    "#\n",
    "# The function should return either the sum or difference (depending on what it calculates)\n",
    "\n",
    "def add_or_subtract():\n",
    "    \n",
    "\n",
    "print(add_or_subtract(15,10,subtract=True))\n",
    "print(add_or_subtract(15,10,subtract=False))\n",
    "print(add_or_subtract(15,10)) # Not passing in last argument!\n",
    "            "
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    "# Write your own factorial function, starting from this starter code.\n",
    "# \n",
    "# The input should be the number you're calculating the factorial of.\n",
    "#\n",
    "# The return value (output) should be the the factorial of that number. \n",
    "\n",
    "def myfactorial():\n",
    "    \n",
    "    fac = 0\n",
    "    \n",
    "    return fac\n",
    "\n",
    "# Test your function!\n",
    "print(myfactorial(4)) # Should be 24\n",
    "print(myfactorial(8)) # Should be 40320\n"
   ]
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    "# Write a function that takes your name and returns how many letters are \n",
    "# in your name, along with how many vowels are in your name.\n",
    "\n",
    "def length_and_vowels():\n",
    "    \n",
    "    nletters = 0\n",
    "    nvowels = 0\n",
    "    \n",
    "    return nletters,nvowels\n",
    "\n",
    "name = \"YOURNAMEHERE\"\n",
    "nl,nv = length_and_vowels(name)\n",
    "print(\"There are %d letters and %d vowels in %s\" % (nl,nv,name))"
   ]
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   "execution_count": null,
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