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Full Discussion: search file and put into struct
Top Forums Programming search file and put into struct Post 302580415 by Corona688 on Thursday 8th of December 2011 11:19:48 AM
Old 12-08-2011
You'll never find the "right answer", since other people probably don't have the same problem as you word-for-word, letter-for-letter, keystroke-for-keystroke.

Try breaking it down into steps instead. You'll get more done, and in doing so, probably figure out where to go next.

1) read it line by line. fgets() does that.
2) Check for BC109 at the beginning of the line. strncmp can do that.
2) break it into tokens. Lots and lots of ways to do that.
3) Put it into the structure. One sscanf would do it in a quick-and-dirty fashion. A safer way would be splitting into tokens and copying or scanning individually.

So:

Code:
char buf[4096];
struct Transistor trans;

while(fgets(buf, 4096, stdin))
{
        int len=strlen("BC109");
        if(strncmp("BC109", buf, len) != 0) continue;
        // "BC109 ", not "BC109A"
        if(!isspace(buf[len])) continue;

        if(sscanf(buf, "%s %s %f %d", trans.chType, trans.chFabrikant, &trans.fPrijs, &trans.behuizing) != 4)
        {
                 fprintf(stderr, "couldn't scan line %s\n", buf);
                 exit(1);
        }

        fprintf(stderr, "Found BC109\n");
        break;
}

This User Gave Thanks to Corona688 For This Post:
metal005
 

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LEARN ABOUT SUNOS

insque

insque(3C)						   Standard C Library Functions 						insque(3C)

NAME

       insque, remque - insert/remove element from a queue

SYNOPSIS

       include <search.h>

       void insque(struct qelem *elem, struct qelem *pred);

       void remque(struct qelem *elem);

DESCRIPTION

       The  insque()  and remque() functions manipulate queues built from doubly linked lists.	Each element in the queue must be in the following
       form:

       struct qelem {
	       struct qelem   *q_forw;
	       struct qelem   *q_back;
	       char	      q_data[];
       };

       The insque() function inserts elem in a queue immediately after pred.  The remque() function removes an entry elem from a queue.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), standards(5)

SunOS 5.10							    24 Jul 2002 							insque(3C)
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