Lecture Notes for CPSC 121 Fall 2012: While Loop Exercises and Function Computation, Study notes of Computer Science

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Lecture Notes CPSC 121 (Fall 2012)

Today ...

• Go over quiz and exam questions
• While loop exercises

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• Ch 7

S. Bowers 1 of 2

Lecture Notes CPSC 121 (Fall 2012)

While versus for loops

Q: What does this function compute?

def f(n): r = 1 for i in range(1, n+1): r = r * i return r

• Returns the product of the first n integers

Q: How can we write this using a while loop?

def f(n): r = 1 i = 1 while i <= n: r = r * i i = i + 1 return r

S. Bowers 2 of 2