NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/lang/c-part2/13067

Internet Message Format | 1996-08-05 | 1.7 KB

Path: nntp.teleport.com!usenet
From: GHouck <[e-mail]>
Newsgroups: comp.lang.c
Subject: Re: Turbo C beginner: string question? Please help!
Date: 4 Apr 1996 08:17:59 GMT
Organization: systems hk
Message-ID: <4k00jn$[e-mail]>
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Reynaldo Ortega <[e-mail]> wrote:
>
>main()
>{
>  char str[80];
>  printf("enter you name: ");
>  gets(str);
>  printf("hello %s", str);
>}
>QUESTION:
> let's say I entered the name TARANTINO, and I wanted to compare each
>single character in the string to display a count of occurences of
>each character. How would I code this? Here is an example to clarify
>what I am asking:
Ray,

First off, the mantra in this newsgroup is NEVER USE gets(), since it
doesn't give you protection against a string being entered which is
longer than your character array; however, it does in a pinch.

I'd do something like this:

  char string[80];
  int  chrCounts[356];
  int  i;

  memset( chrCounts,0,sizeof(chrCounts) ); /* clear 256 counters */
  ...
  fgets( string,sizeof(string),stdin );    /* get your string */
  ...
  for( i=0; i<strlen(string); i++ )        /* seq thru chars, tallying each */
    ++chrCounts[(unsigned)string[i]];
  ...
  for( i=0; i<256; i++ )                   /* for each non-zero count print it */
    if( chrCounts[i] > 0 )                 /* i is each character as an index */
      printf( "%s has %d %c's",string,chrCounts[i],i );
  ...

Yours, Geoff Houck