🚀 go-pugleaf

On 15 Nov 1997 05:08:09 GMT, "GREG HOOPER" <upgrade@b022.aone.net.au>
wrote:

>/* PURPOSE OF PROGRAM */
>/*
>Read contents of a text file once via re-direction

"Via re-direction" meaning "read from stdin" I suppose?

>character by character, process the characters
>read and display a simple horizontal bar graph
>that depicts the frequency of the first five
>characters found in the text file.

What about case?  Is that the first five (no check for duplicates), or
the first unique five?

>*/
>
>/* LIBRARY */
>#include <stdio.h>
>
>/* FUNCTION CALLS */
>void NumOfChars(char[], int, int[]);
>void CharPrint(char[], int[]);
>void AstPrint(int[], int);
>void pause(void);
>void main()

Mind your language, that's: "int main(void)".

>	{
>	int NumArray[] = {0,0,0,0,0}, get_char, i = 0;
>	char CharArray[] = {0,0,0,0,0};
>
>	do
>		{
>		get_char = getchar();
>
>		if ((get_char > 64 && get_char < 91) || (get_char > 96 && get_char <
>123))

If you had #included <ctype.h> you might have used isalpha().
<ctype.h> also provides the handy toupper(), tolower(), isupper(),
islower() functions (c.q. macros).

>			{
>				CharArray[i] = get_char;
>				i++;

Oops!  CharArray[] only has space for five!

>			}
>		}while((CharArray[i] != EOF));
>
>	 while(get_char != EOF)
 etc.

Think again.  You can do this in a single pass.

Read a character.  Is it already in the array of the five "first"
characters?  [How do you know a place is "taken"?]  If so, increment
the count for that character, if not: do we already have five
characters stored in the "first-five" array?  If so, just ignore this
character, if not, store it in the array and give it a score of 1.
Repeat until EOF.

Now translate that to C.


==
Miguel Carrasquer Vidal                     ~ ~
Amsterdam                   _____________  ~ ~
mcv@pi.net                 |_____________|||

========================== Ce .sig n'est pas une .cig
-- 
comp.lang.c.moderated - clcm@plethora.net