Difference between revisions of "Convert a for loop to a while loop"

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|Chapter_TOC=[[Extra Labs]]
 
|Chapter_TOC=[[Extra Labs]]
 
|Introduction=In this program, you will be learn how to use while and for loop control structures in Python.  
 
|Introduction=In this program, you will be learn how to use while and for loop control structures in Python.  
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===[[while and for loops syntax in Python:]]===
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<li>while and for loops syntax in Python:
  
 
while (expression):
 
while (expression):
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|Body=
  
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===[[for loop]]===
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<li>'''for loop:'''
 
  The program below shows how to print out alphabets in a for loop:
 
  The program below shows how to print out alphabets in a for loop:
 
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===[[while loop example]]===
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<li>while loop example
 
The program below illustrates how to use while loop
 
The program below illustrates how to use while loop
  

Latest revision as of 23:26, 3 April 2012

COMP 1010 Home > Back to Extra Labs

Introduction

In this program, you will be learn how to use while and for loop control structures in Python.

  • while and for loops syntax in Python: while (expression): Statement(s) for iterating_var in sequence: Statements(s) The program below shows how to print out alphabets in a for loop

    • Contents

  • for loop: The program below shows how to print out alphabets in a for loop: 
     ####################################
#Prints out all lower case alphabets

letter = 'a'
for i in range (0,26):
    print letter
    letter  = chr(ord(letter) + 1)
  • while loop example The program below illustrates how to use while loop 
     ############################################
# Ensures that the user enters either of the 
# characters (a, b or c)

## Gets input from th user
message = raw_input("Please enter a, b, or c: ")

while(message != "a" and message != "b" and message != "c"):
    message = raw_input("Please enter a, b, or c:")
print "You entered: " + message
    • Retrieved from "https://hci.cs.umanitoba.ca/mediawiki/index.php?title=Convert_a_for_loop_to_a_while_loop&oldid=16552"