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sami/learn-python-the-hard-way/ex21.py

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+def add(a, b):
+print(f"ADDING {a} + {b}")
+return a + b
+
+
+def subtract(a, b):
+print(f"SUBTRACTING {a} - {b}")
+return a - b
+
+
+def multiply(a, b):
+print(f"MULTIPLYING {a} * {b}")
+return a * b
+
+
+def divide(a, b):
+print(f"DIVIDING {a} / {b}")
+return a / b
+
+
+print("Let's do some math with just functions!")
+
+age = add(30, 5)
+height = subtract(78, 4)
+weight = multiply(90, 2)
+iq = divide(100, 2)
+
+
+print(f"Age: {age}, Height: {height}, Weight: {weight}, IQ: {iq}")
+
+
+# A puzzle for the extra credit, type it in anyway.
+print("Here is a puzzle.")
+
+
+what = add(age, subtract(height, multiply(weight, divide(iq, 2))))
+
+
+print("That becomes: ", what, "Can you do it by hand?")