Deleting spaces in a string

bahada · 05-25-2009, 12:05 PM

Hi,
I want to write a code which takes an array of 20 characters and deletes all spaces between characters, it should leave only letters. For example:
input :a b c d e
I want to make it : abcde

I wrote this code, but it didn't change anything:

Code:

#include <stdio.h>

 int main ()
 {
         int i;
         char a[21];



         gets(a);

         for(i = 0; i < 20; i++)
         {
                 if(a[i] == 8 || a[i] == 9)
                 {a[i]= a[i+1];
                 i--;}
                 else continue;
         }

         printf("%s", a);
         printf("\n");

         return 0;
 }

Can you help me with that? Thanks...

elwad · 05-25-2009, 12:11 PM

your searching if a[i]==8 or 9 whish is back space or horiztal tab then you making i+1 to that a and minunsing i after that ii dunno why your doing that anyways ?
why dont you try copy anything inside the string thats not space
if(a[i]!=' '){continue your function here}?

itCbitC · 05-25-2009, 12:34 PM

Code:

if(a[i] == 8 || a[i] == 9) /* what is this statement supposed to do??? */

bahada · 05-25-2009, 12:36 PM

to catch if the character is a space or not (backspace and horizontal tab)

MK27 · 05-25-2009, 12:39 PM

' ' == 32

The other complication is that "i--" is not sufficient to compress the string.

itCbitC · 05-25-2009, 12:50 PM

Then use the character constant instead of its decimal value which depends on the underlying character set.

**Salem** · 05-25-2009, 12:55 PM

Don't do this
String Question - C

Here's why
How To Ask Questions The Smart Way

MK27 · 05-25-2009, 01:17 PM

Quote:

Originally Posted by Salem

Don't do this

Salem is being mean! There is nothing wrong with the OP. The one and only reply on Daniweb starts out with a completely moronic and incorrect analysis:

Quote:

You can't compile this code, that's why it didn't change anything: the else alternative has no correspondent if! Didn't you see it?

What? I see an if and an else. I'd go somewhere "else" and ask again too.

Chill out bahada.

bahada · 05-25-2009, 11:46 PM

I solved this problem in another way thanks, and I asked at first at daniweb but i couldn't get the answer for hours, then I asked here..

c.user · 05-26-2009, 07:08 PM

function for deleting any character

**Salem** · 05-26-2009, 10:00 PM

> but i couldn't get the answer for hours, then I asked here
Oh, but there are answers there.
So now you're claiming it's urgent
Don't go round spamming multiple forums in the mistaken belief that you're entitled to a 24/7 service wherever you go.

MK27 · 05-26-2009, 10:07 PM

Quote:

Originally Posted by Salem

Don't go round spamming multiple forums in the mistaken belief that you're entitled to a 24/7 service wherever you go.

That is not spamming, and you are not obliged to answer questions...I think.

05-25-2009, 12:05 PM	#1
bahada Registered User Join Date: Apr 2009 Posts: 10	Deleting spaces in a string Hi, I want to write a code which takes an array of 20 characters and deletes all spaces between characters, it should leave only letters. For example: input :a b c d e I want to make it : abcde I wrote this code, but it didn't change anything: Code: #include <stdio.h> int main () { int i; char a[21]; gets(a); for(i = 0; i < 20; i++) { if(a[i] == 8 \|\| a[i] == 9) {a[i]= a[i+1]; i--;} else continue; } printf("%s", a); printf("\n"); return 0; } Can you help me with that? Thanks...
bahada is offline

05-25-2009, 12:11 PM	#2
elwad Registered User Join Date: Apr 2009 Posts: 187	your searching if a[i]==8 or 9 whish is back space or horiztal tab then you making i+1 to that a and minunsing i after that ii dunno why your doing that anyways ? why dont you try copy anything inside the string thats not space if(a[i]!=' '){continue your function here}?
elwad is offline

05-25-2009, 12:34 PM	#3
itCbitC Registered User Join Date: Oct 2008 Location: TX Posts: 1,262	Code: if(a[i] == 8 \|\| a[i] == 9) /* what is this statement supposed to do??? */
itCbitC is offline

05-25-2009, 12:36 PM	#4
bahada Registered User Join Date: Apr 2009 Posts: 10	to catch if the character is a space or not (backspace and horizontal tab)
bahada is offline

05-25-2009, 12:39 PM	#5
MK27 subminimalist Join Date: Jul 2008 Location: NYC Posts: 3,944	' ' == 32 The other complication is that "i--" is not sufficient to compress the string. __________________ Accuracy and integrity mean nothing if you don't make it past the censors...PYTHAGORAS
MK27 is offline

05-25-2009, 12:50 PM	#6
itCbitC Registered User Join Date: Oct 2008 Location: TX Posts: 1,262	Then use the character constant instead of its decimal value which depends on the underlying character set.
itCbitC is offline

05-25-2009, 12:55 PM	#7
Salem and the hat of vanishing Join Date: Aug 2001 Location: The edge of the known universe Posts: 21,214	Don't do this String Question - C Here's why How To Ask Questions The Smart Way __________________ If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut. Up to 8Mb PlusNet broadband from only £5.99 a month!
Salem is offline

05-25-2009, 11:46 PM	#9
bahada Registered User Join Date: Apr 2009 Posts: 10	I solved this problem in another way thanks, and I asked at first at daniweb but i couldn't get the answer for hours, then I asked here..
bahada is offline

05-26-2009, 10:00 PM	#11
Salem and the hat of vanishing Join Date: Aug 2001 Location: The edge of the known universe Posts: 21,214	> but i couldn't get the answer for hours, then I asked here Oh, but there are answers there. So now you're claiming it's urgent Don't go round spamming multiple forums in the mistaken belief that you're entitled to a 24/7 service wherever you go. __________________ If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut. Up to 8Mb PlusNet broadband from only £5.99 a month!
Salem is offline

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