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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: Splitting strings into arrays with sscanf
Date: Fri, 16 Jun 2017 12:20:11 -0700
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scott@slp53.sl.home (Scott Lurndal) writes:
> DFS <nospam@dfs.com> writes:
>>How do you use sscanf to split a line into pieces and add each piece to 
>>an array?
>>
>>#include <stdio.h>
>>#include <string.h>
>>int main (int argc, char *argv[])
>>{
>>	char line[50]    = "";
>>	char lbls[4]     = "";
>>	char data[10][4] = "";
>
> The initializations don't match the declarations, and
> while lines 5 & 6 don't get errors, they won't provide you
> with the results you desire.   Instead, lose the initializers
> and use memset to initialize the vectors to your desired value(s).
>
> e.g.
>
>  char data[10][4];
>
>  memset(data, 0, sizeof(data));

The initializers for `line` and `lbls` are perfectly valid.  Only the
initialization for `data` is incorrect.  One way of fixing it is:

    char line[50]    = "";
    char lbls[4]     = "";
    char data[10][4] = { "" }; /* remaining elements are implicit */

or even:

    char line[50]    = { 0 };
    char lbls[4]     = { 0 };
    char data[10][4] = { 0 };

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"