Thread: Probllem I'm Solving

Hi there;

I need a help with a problem I am trying to code around.

I need to take in a line - in the form "xxx $y, $y, $y". The line is always in this form. xxx can be any character, and the following $y's are $anynumber - seperated by commas.

The tokens may be seperated by no spaces, a single space, tabs, multiple spaces or a combination of both. There is always at least one spaxe seperating "xxx" from the first "$y", however.

I need to parse these into four arrays, but not sure where to start with the space-handling.

Any ideas?

I think you can use scanf because I think it sort of
ignores white space (probably)



scanf "%s $%d, $%d, $%d", strval, &yy, &xx, &zz);


Some of the characters may be special so might need a \ before
then such as

%s \$%d, \$%d, \$%d",


Less likely is
"%s \$%d\, \$%d\, \$%d"

Originally Posted by Salem

The ever flexible sscanf....

Code:

$ cat foo.c && gcc foo.c && ./a.out
#include <stdio.h>
int main ( ) {
  char test[] = "abc $12, $34, $567";
  char string[10];
  int  x, y, z;

  if ( sscanf( test, "%s $%d, $%d, $%d",
               string, &x, &y, &z ) == 4 ) {
    printf( "Conversion OK\n" );
    printf( "String=%s, numbers=%d,%d,%d\n", string, x, y, z );
  }
  return 0;
}


Conversion OK
String=abc, numbers=12,34,567

How do I ignore the whitespaces, say if they were deliminated by tabs instead?