Difference between revisions of "Count the Vowel"
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(I organized the page into headers. I also corrected the template to COMP 1010 Extra Labs ; initially, it had 1010PrAD Template.) |
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|Introduction= In this lab, you will learn how to use String methods in Python. | |Introduction= In this lab, you will learn how to use String methods in Python. | ||
==Problem== | ==Problem== | ||
| − | Write a Python program that counts the number of vowels in a | + | Write a Python program that counts the number of vowels in a String given by the user. |
|Body= | |Body= | ||
| Line 9: | Line 9: | ||
First, we need 3 variables: | First, we need 3 variables: | ||
| − | + | * input - holding the user's input | |
| − | + | * done - control the while loop | |
| − | + | * vowelCount - count the number of vowel | |
{{CodeBlock | {{CodeBlock | ||
| Line 53: | Line 53: | ||
}}<br /> | }}<br /> | ||
| − | + | After this, we're done. You should now be able write a complete program that counts the number of vowels in a String given by the user. | |
==SolutionCode== | ==SolutionCode== | ||
| Line 76: | Line 76: | ||
print '\nVowel count: %d\nVowel percentage: %d%%' % \ | print '\nVowel count: %d\nVowel percentage: %d%%' % \ | ||
| − | (vowelCount, vowelCount * 100 / | + | (vowelCount, vowelCount * 100 / len(input)) |
main() | main() | ||
}} | }} | ||
}} | }} | ||
Latest revision as of 03:21, 5 April 2012
COMP 1010 Home > Back to Extra Labs
IntroductionIn this lab, you will learn how to use String methods in Python. ProblemWrite a Python program that counts the number of vowels in a String given by the user. |
|---|
Step 1:
First, we need 3 variables:
- input - holding the user's input
- done - control the while loop
- vowelCount - count the number of vowel
done = False vowelCount = 0
Step 2:
Second, we need get the input using raw_input(prompt).
#get the input from user
input = raw_input("Enter a sentence")
if input != '': Step 3:
Third, we need to check the vowel.
input = input.lower() for char in inputs: #//check if it's a vowel if char == 'a' :
Step 4:
Then we need to use while loop to print the output.
while(!done): (...) #output result print '\nVowel count: %d\nVowel percentage: %d%%' % \ (vowelCount, vowelCount * 100 / leng(input))
After this, we're done. You should now be able write a complete program that counts the number of vowels in a String given by the user.
SolutionCode
def main():
done = False
vowelCount = 0
while(!done):
input = raw_input("Enter a sentence")
if input == '':
done = True
else:
#convert input to lower case
input = input.lower()
for char in inputs:
#//check if it's a vowel
if char == 'a' or char == 'e' or char == 'i' or char == 'o' or char == 'u' :
vowelCount++; #increase vowel count
print '\nVowel count: %d\nVowel percentage: %d%%' % \
(vowelCount, vowelCount * 100 / len(input))
main()
