Simple string question?

Any tips as to how to take a string input and return a copy of the string without the blanks?

Setup a char pointer to your string, and then use

Code:

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isspace()

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to determine whether you are pointing at white space or not.

Then either move the pointer along to the next element, or add the pointer value to another array depending on the result of isspace.

Code:

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p = array;

while ( *p != '\0' )
{
        if ( isspace(*p) )
        {
                ++p;
        }
        else
        {
                newarray[i++] = *p;
                ++p;
        }
}

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how come this doesn't work for me?

Code:

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#include <stdio.h>
#include <string.h>
#include <ctype.h>

#define MAXSIZE 80

int main()
{
    char array[MAXSIZE];
    int i = 0;
    int size;

    printf("Enter a string: ");

    fgets(array, MAXSIZE, stdin);
    size = sizeof(array);
    while(i < size)
    {
        if( isspace(array[i]) )
        {
            size--;
        }
        else
        {
          printf("%c", array[i]);
        }
        i++;
    }

    return 0;
}

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Quote:

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Originally Posted by mapunk

how come this doesn't work for me?

Code:

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#include <stdio.h>
#include <string.h>
#include <ctype.h>

#define MAXSIZE 80

int main()
{
    char array[MAXSIZE];
    int i = 0;
    int size;

    printf("Enter a string: ");

    fgets(array, MAXSIZE, stdin);
    size = sizeof(array);
    while(i < size)
    {
        if( isspace(array[i]) )
        {
            size--;
        }
        else
        {
          printf("%c", array[i]);
        }
        i++;
    }

    return 0;
}

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Works for me.

Except the fact that your loop will not terminate when it hits the end of your string.

dont listen to me im a noob

Quote:

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Originally Posted by jamie85

Works for me.

Except the fact that your loop will not terminate when it hits the end of your string.

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Yeah, it took out all the spaces/tabs and what not, but it was getting a bunch of other random data from other parts of the memory (which is b/c its not terminating when it should) But, I thought thats what the size-- would do, b/c it decrements the size, so every time it takes a space out it should do one less loop of the while loop

Code:

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  while ( array[i] )
  {
      if ( !isspace(array[i]) )
      {
        putchar(array[i]);
      }
      i++;
  }

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Quote:

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Originally Posted by Dave_Sinkula

Code:

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while(array[i])

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lol, thanks...don't know why i didn't think of that