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Re: [Structure of Array] pointer arithmetic in structures

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Dexterr <dejangru@gmail.com> writes:

> On Sunday, December 18, 2016 at 10:26:30 PM UTC+1, Ben Bacarisse wrote:
>> Dexterr <dejangru@gmail.com> writes:
>> 
>> > On Sunday, December 18, 2016 at 9:07:41 PM UTC+1, Ben Bacarisse wrote:
>> >> Dexterr <dejangru@gmail.com> writes:
>> >> 
>> >> >> If the input will always be in the form A/B or (A/B), where A and B are 
>> >> >> integers, then that makes things easier. Read as two integers 
>> >> >> (discarding "(", "/" and ")"), and store as two integers. Optionally 
>> >> >> divide them (as (double)A/B otherwise you'll get 0) to calculate with.
>> >> >> 
>> >> > YES. Thats what I intend to do!
>> >> >
>> >> > I am looking for elegant solution right now.
>> >> >
>> >> >   const char str1[2] = "(";
>> >> >   const char str2[2] = ")";
>> >> >
>> >> >   char *token_01 = "";
>> >> >   char *token_02 = "";
>> >> >
>> >> >   token_01 = strtok(ptr_parts[2].value, str1);
>> >> >   token_02 = strtok(ptr_parts[2].value, str2);
>> >> 
>> >> Just some more food for thought:
>> >> 
>> >> #include <stdio.h>
>> >> 
>> >> int main(void)
>> >> {
>> >>      char line[100];
>> >>      while (fgets(line, sizeof line, stdin)) {
>> >>           int num, den;
>> >>           if (sscanf(line, " (%d/%d)", &num, &den) == 2)
>> >>                printf("%g\n", (double)num/den);
>> >>           else puts("Input line should have the form \"(A/B)\"");
>> >>      }
>> >> }
>> >
>> > Thanks Mr Ben. ;)
>> > Yes, this is very nice example but when user put from the terminal
>> > values such as (47/100).
>> > But, in my case it is about input text file which consist values such
>> > (A/B) and I must use this and convert from string into float form, to
>> > make some calculations and then result from float form turn again into
>> > a form (A/B).
>> 
>> You are seeing distinctions that don't exit.  I read a line from a
>> stream just as you do and I extract some numbers from the resulting
>> string.  This example is directly applicable to your situation.
>> 
>> But there is a problem...  If you have been following the advice to do
>> it one way, it can be unhelpful to be shown other ways.  If you choose
>> not to use sscanf, when you've finished your exercise, I'll post the
>> full version of how I would have done it so you can compare (though you
>> may need to remind me).
>
> Mr Ben, did you read the specifications what I need to do in my example ?
> The algorithm for calculations is extrem complicated.

No, I must have missed that.  I saw only that you must do some
computations but I did not what they were.  But I don't think the nature
of the computations changes much since the code you posted dealt only
with interpreting the input.  My suggestion was specifically about that.

But, as I said, if using sscanf is not a helpful suggestion, then just
forget I said anything.

> I am very
> desperate because I am
> doing this for 2 weeks completely alone. My collegue work nothing. We
> are in 2 students group.
> I have to do it till Tuesday and I am in the position to cry. I fill
> so sad. If I fail I must wait one year but it is not to wait, I realy
> need to learn C and understand. So many hours invest and after all it
> will be nothing.

You should get partial credit for whatever parts you have managed to
complete, and there should be a process for you to register the fact
that your team mate as not contributed anything.

-- 
Ben.

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[Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 07:51 -0800
  Re: [Structure of Array] pointer arithmetic in structures fir <profesor.fir@gmail.com> - 2016-12-18 08:15 -0800
    Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 09:31 -0800
  Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-18 16:27 +0000
    Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 09:43 -0800
      Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-18 18:13 +0000
        Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 10:31 -0800
      Re: [Structure of Array] pointer arithmetic in structures Barry Schwarz <schwarzb@dqel.com> - 2016-12-18 10:39 -0800
  Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 10:02 -0800
    Re: [Structure of Array] pointer arithmetic in structures Barry Schwarz <schwarzb@dqel.com> - 2016-12-18 10:20 -0800
      Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 10:40 -0800
        Re: [Structure of Array] pointer arithmetic in structures Barry Schwarz <schwarzb@dqel.com> - 2016-12-18 10:54 -0800
          Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 11:10 -0800
        Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-18 18:54 +0000
          Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 11:05 -0800
          Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 11:22 -0800
            Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-18 19:38 +0000
              Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 11:45 -0800
                Re: [Structure of Array] pointer arithmetic in structures Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-18 20:07 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 12:35 -0800
                Re: [Structure of Array] pointer arithmetic in structures Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-18 21:26 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-18 13:47 -0800
                Re: [Structure of Array] pointer arithmetic in structures Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-19 00:23 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-19 10:53 -0800
                Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-19 19:11 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-19 11:20 -0800
                Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-19 19:31 +0000
                Re: [Structure of Array] pointer arithmetic in structures Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-19 20:06 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-19 11:27 -0800
                Re: [Structure of Array] pointer arithmetic in structures BartC <bc@freeuk.com> - 2016-12-19 19:40 +0000
                Re: [Structure of Array] pointer arithmetic in structures Dexterr <dejangru@gmail.com> - 2016-12-19 12:09 -0800
                Re: [Structure of Array] pointer arithmetic in structures Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-19 20:15 +0000
                Re: [Structure of Array] pointer arithmetic in structures "Peter \"Shaggy\" Haywood" <phaywood@alphalink.com.au> - 2016-12-24 17:12 +1100
                Re: [Structure of Array] pointer arithmetic in structures Barry Schwarz <schwarzb@dqel.com> - 2016-12-19 16:15 -0800

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