phrase to words ?

after i use the getline function to get a phrase. Now how do i break the phrase into words ?

there's easier ways, but you could walk the string and look for spaces... then break those up into their own strings...

but how do i do it ?
when i encounter the 2nd space, how i know the length between the 1st space and the 2nd space ?

a space is one character... one element in the array... just write something like this:

Code:

---

...
int count=0;
int x=0;
int y=0;
int someleft=strlen(phrase);

while(count<someleft)
{
  if(phrase[count]!=' ')
  {
      token[y][x]=phrase[count];
      x++;
  }
  else
  {
      x=0;
      y++;
  }
  count++;
}
...

---

this will put the words (tokens) in it's own array... actually, in this case, an array of arrays... it would look like this:

Code:

---

input: The Quick Brown Fox

token[0]:The
token[0][0]:T
token[0][1]:h
token[0][2]:e
token[1]:Quick
token[2]:Brown
token[3]:Fox

---

like I said, I think there's better ways than this, so you may want to wait around for a better response, but this is the way I would do it (because it's the only way I know how)... I'm not sure the code I gave you works either, but you should be able to get the general idea from it...

unless you mean there's several spaces... like something like this:

Code:

---

The          Quick  Brown                                        Fox

---

in that case, my code would still work, but inefficiently... it would look more like this:

Code:

---

token[0]:The
token[1]:
token[2]:
token[3]:
token[4]:
token[5]:
token[6]:
token[7]:
token[8]:
token[9]:
token[10]:
token[11]:Quick
token[12]:
token[13]:Brown
token[14]:
...
token[56]:fox

---

at least that's what I think it will do... but like I said, I didn't check the actual code... I would wait for a better response if I were you... I should probably learn some better ways too... or you could try something with isspace(), like this:

Code:

---

...
int count=0;
int x=0;
int y=0;
int someleft=strlen(phrase);
bool new;

while(count<someleft)
{
  if(phrase[count]!=' ')
  {
      token[y][x]=phrase[count];
      x++;
      new=true;
  }
  else if(new)
  {
      x=0;
      y++;
      new=false;
  }
  else
      x++;

  count++;
}
...

---

that might fix the problem with multiple spaces... jeebus... this post is getting a little too long for it's own good...

I wouldn't use new as variable name, it's a keyword.

You can use string_tokenizer from the boost library.

But in this case I suppose it would be simpler to use >> for string input in the first place, so that the stream does the splitting for you. Except that makes you miss the breaking character. Hmm...

yeah... I missed that... and you can't use new as a variable name... heh... I actually started writing that as psuedo-code, but then decided to just write some dummy code...

I always say pseudo-code is evil ;)

Quote:

---

Originally posted by CornedBee
I always say pseudo-code is evil ;)

---

Then stay on your side of the fence. I find it extremely useful.

;) back

:)