Python学习13-函数返回值
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/ 个人分类：笨办法学Python
$ex21.py
def add(a, b):
print ("ADDING %d + %d" % (a, b))
return a + b
def subtract(a, b):
print ("SUBTRACTING %d - %d" % (a, b))
return a - b
def multiply(a, b):
print ("MULTIPLYING %d * %d" % (a, b))
return a * b
def divide(a, b):
print ("DIVIDING %d / %d" % (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 ("Age: %d, Height: %d, Weight: %d, IQ: %d" % (age, height, weight, 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?")
输出结果：
Let's do some math with just functions!
ADDING 30 + 5
SUBTRACTING 78 - 4
MULTIPLYING 90 * 2
DIVIDING 100 / 2
Age: 35, Height: 74, Weight: 180, IQ: 50
Here is a puzzle.
DIVIDING 50 / 2
MULTIPLYING 180 * 25
SUBTRACTING 74 - 4500
ADDING 35 + -4426
That becomes: -4391.0 Can you do it by hand?
函数中用return提供返回值
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