Looping through multiple arrays in C. Post: 303021292

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Top Forums Programming Looping through multiple arrays in C. Post 303021292 by Corona688 on Tuesday 7th of August 2018 04:56:26 PM

08-07-2018

Registered User

That it compiled without errors only means your program is correct grammatically, the same way "my hovercraft is full of eels" will pass a grammar check but not help Belgians communicate with foreigners. Your program does not do what you think it does.

Code:

for(c = 'a'; c <= 'b'; ++c)

'a' and 'b' are the ASCII integers 91 and 92, respectively. They are not the arrays a and b and cannot be used to retrieve those variables.

How about this?

Code:

#include <stdio.h>

int main(int argc, char *argv[])
{
        int a [5] = {1,2,3,4,5};
        int b [5] = {6,7,8,9,10};
        int *c[]={a, b}; // c[0] is effectively a, c[1] is effectively b

        int n, m;

        for(n=0; n<1; n++)
        {
                for(m=0; m<5; m++)
                {
                        printf("Array %d[%d] = %d\n", n, m, c[n][m]);
                }
        }
}

Last edited by Corona688; 08-07-2018 at 06:19 PM.. Reason: fixed several errors

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LEARN ABOUT DEBIAN

yapps

YAPPS(1)						      General Commands Manual							  YAPPS(1)

NAME

       yapps - create a Python module from a grammar file

SYNOPSIS

       yapps [ --dump ] [ --use-devel-grammar ] [ -fcontext-insensitive-scanner ] [ -p	pid ] [ -f ] input.g [ output.py ]  name

DESCRIPTION

	 --dump 			  Dump out grammar information
	   --use-devel-grammar		     Use the devel grammar parser from	    yapps_grammar.py instead of the stable grammar from grammar.py
	      -fcontext-insensitive-scanner    Scan all tokens (see docs)

       yapps generates a Python program which will parse a given grammar.

OPTIONS

       --dump Dump the grammar information to stdout.

       --use-devel-grammar
	      Use the grammar file in ./yapps_grammar.py instead of yapps/grammar.py.
	      This option is useful for testing new grammar parsers. (Yes, yapps' parser is itself written with yapps...)

       -fcontext-insensitive-scanner
	      Set the option to use the non-context-sensitive scanner.

CAVEATS

       yapps implements a recursive-descent scanner.

HISTORY

       Written by Amit J. Patel <amitp@cs.stanford.edu>.
       This version was enhanced by Matthias Urlichs <smurf@debian.org>.  It is not downwards-compatible with the original yapps2 (yet) and uses a
       different runtime library.
       See the change log for details.

																	  YAPPS(1)

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