do while loop need some help. :D

Question

opawix 0 Newbie Poster

13 Years Ago

:twisted:

guys can some1 give me hints to solve this? any help will do. thank you.

make a program display a lowercase vowels using do while loop:

heres my code:

char letter;
{
    do{
        cout<<letter;
    }
    while((letter!='b')||(letter!='c')||(letter!='f')||(letter!='g')||(letter!='h')||(letter!='j')||
          (letter!='k')||(letter!='l')||(letter!='m')||(letter!='n')||(letter!='p')||(letter!='q')||
          (letter!='r')||(letter!='s')||(letter!='t')||(letter!='v')||(letter!='w')||(letter!='x')||
          (letter!='y')||(letter!='z'))
}

heres my code but it won't work!

c++

Edited 13 Years Ago by Narue because: added code tags and formatting

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Latest Post 13 Years Ago Latest Post by opawix

Narue 5,707 Bad Cop

13 Years Ago

What you probably want to do is accept any character in the loop, but only print it if it matches the criteria:

while (cin >> letter) {
    if (is_vowel(letter))
        cout << letter;
}

Obviously this is a non-working example that you would need to flesh out (such as writing is_vowel()), but it should suffice to show the concept.

Fbody 682 Posting Maven

13 Years Ago

What do you know about the differences/similarities between the while and do-while loops?

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opawix 0 Newbie Poster · Answer 1 · 2011-08-08T06:00:35+00:00

thanks sir, but i haven't get the idea, i have to use do-while loop. sorry i'm a newbie w/ this.

WaltP 2,905 Posting Sage w/ dash of thyme Team Colleague · Answer 2 · 2011-08-09T03:16:52+00:00

1) Start letter at 'a'
2) Start the do-while loop
3) IF letter is not vowel
4) output the letter
5) increment the letter
6) end of do-while if letter >= 'z'

opawix 0 Newbie Poster · Answer 3 · 2011-08-10T17:10:52+00:00

#include <iostream>
using namespace std;
int main()
{ 
char letter='a';
do { 
if((letter!='b')&&(letter!='c')&&(letter!='d')&&(letter!='f')&&(letter!='g')&&(letter!='h')&&(letter!='j')&&(letter!='k')&&(letter!='l')&&(letter!='m')&&(letter!='n')&&(letter!='p')&&(letter!='q')&&(letter!='r')&&(letter!='s')&&(letter!='t')&&(letter!='y')&&(letter!='x')&&(letter!='z')&&(letter!='w')&&(letter!='v')) 
cout<<letter; letter++; 
}while(letter<='u'); 
system ("pause"); return 0;
 }

thanks to you!