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Full Discussion: How to pass C array as input to Shell script
Top Forums Programming How to pass C array as input to Shell script Post 302312086 by Corona688 on Thursday 30th of April 2009 10:25:50 AM
Old 04-30-2009
Code tags for code please. [code] stuff [/code] without the extra spaces in the tags.

Your array is too big. You specify that it has two elements but give it three initializers. This probably produces a warning.

To do what you want you need to convert it into a string. If it will always just have three initializers it could probably be made simpler but this should work for any size of array.
Code:
#include <stdio.h>
// for execlp()
#include <unistd.h>

int main()
{
  const char *script="echo";
  const char *prefix="";
  int pos=0, n;
  char buf[256];
  int a[3]={1,2,3};

  for(n=0; n<3; n++)
  {
    pos+=snprintf(buf+pos, 256-pos, "%s%d", prefix, a[n]);
  }
  printf("will call %s with %s\n", script, buf);

  // Note that this command never returns unless it fails to run at all.
  execlp(script, script, buf, NULL);
  // If the program is still running, then execlp failed, so return error
  return(1);
}

Last edited by vgersh99; 04-30-2009 at 12:14 PM.. Reason: added
 

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LEARN ABOUT CENTOS

th_wbrk_line

thai/thwbrk.h(3)						      libthai							  thai/thwbrk.h(3)

NAME

       thai/thwbrk.h -

       Thai wide-char word segmentation.

SYNOPSIS

   Functions
       int th_wbrk (const thwchar_t *s, int pos[], size_t n)
	   Find word break positions in Thai wide-char string.
       int th_wbrk_line (const thwchar_t *in, thwchar_t *out, size_t n, const thwchar_t *delim)
	   Insert word delimitors in given wide-char string.

Detailed Description
       Thai wide-char word segmentation.

Function Documentation
   int th_wbrk (const thwchar_t *s, intpos[], size_tn)
       Find word break positions in Thai wide-char string.

       Parameters:
	   s : the input string to be processed
	   pos : array to keep breaking positions
	   n : size of pos[]

       Returns:
	   the actual number of breaking positions occurred

       Finds word break positions in Thai string s and stores at most n breaking positions in pos[], from left to right.

   int th_wbrk_line (const thwchar_t *in, thwchar_t *out, size_tn, const thwchar_t *delim)
       Insert word delimitors in given wide-char string.

       Parameters:
	   in : the input wide-char string to be processed
	   out : the output wide-char buffer
	   n : the size of out (as number of elements)
	   delim : the wide-char word delimitor to insert

       Returns:
	   the actual size of the processed string (as number of elements)

       Analyzes the input string and store the string in output buffer with the given word delimitor inserted at every word boundary.

Author
       Generated automatically by Doxygen for libthai from the source code.

Version 0.1.14							  Tue Jun 17 2014						  thai/thwbrk.h(3)
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