C++ Program functions

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Need some help with this one. Totally lost

Write a function that takes as a parameter a string and returns the vowels (a,e,i,o,u).

The function prototype should look like this

void countVowels(string str, int& aCt, int& eCt, int& iCt, int& oCt, int& uCt);

any help would be greatly appreciated.

Posted 21-May-11 8:40am

Member 7943244

Updated 21-May-11 10:00am

CPallini

v2

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3 solutions

Solution 3

Why are you 'totally lost'?
As already suggested, the trick is accessing the string as an array of characters (string provides the [] operator for the purpose), so your algorithm would be, basically:

Reset vowel counters (aCt=0; ...).
Reset index (say n=0).
if n>=length of the string then exit.
if character at index n, namely str[n] is 'a' then increment aCt else if it is 'e' then increment eCt else if ...
increment index n.
go to point 3.

Posted 21-May-11 10:16am

CPallini

Updated 21-May-11 10:33am

v2

Comments

Hans Dietrich 21-May-11 22:14pm

Yes, and could you double-size me, too?

CPallini 22-May-11 12:44pm

Of course, sir.

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Richard MacCutchan · Accepted Answer · 2011-05-21T08:43:00

Solution 1

If you really cannot figure this out then you need to spend some (or a lot of) time with your C++ reference manuals. Look at the string functions such as strchr, and the for, while and if statements.

Posted 21-May-11 8:43am

Richard MacCutchan

Christian Graus · Accepted Answer · 2011-05-21T08:46:00

Solution 2

This is obviously homework. If we were to do this (trivial) task for you, how would you learn ? A clue - a string is an array of characters. You know how to access items in an array, right ?

Posted 21-May-11 8:46am

Christian Graus

Comments

Richard MacCutchan 22-May-11 3:47am

You know how to access items in an array, right ?

I don't think you should make too many assumptions. :)

Good to see you back, by the way.