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Date: Thu, 29 Feb 1996 16:59:33 -0500 (EST)
From: Leo Papandreou <leo@rur.com>
To: questions@freebsd.org
Subject: C question: what is wrong with this code
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I am having a problem with elementary C. The following stub
reproduces the problem exactly. What am I doing wrong?


#include	<stdlib.h>
#include	<stdio.h>
#include	<string.h>

#define	TABLESIZE	10
#define	ITERATIONS	10

main()
{

	int	i, j , n;
	char	*table[TABLESIZE], buff[1024];

	for (i = 0; i < ITERATIONS; i++)
		{
		/*
		 * populate the table with some random strings
		 */
		n = random() % TABLESIZE + 1;
		for (j = 0; j < n; j++)
			{
			sprintf(buff, "%d", random() % 10000);
			table[j] = strdup(buff);
			}

		for (j = 0; j < n; j++)
			printf("%s\t", table[j]);
		printf("\n");

		/* so far, so good. Now sort the table */
		qsort(table, n, sizeof(char *), strcmp);
		for (j = 0; j < n; j++)
			printf("%s\t", table[j]);
		printf("\n");
		/* huh!? Doesnt look sorted, does it? */

		for (j = 0; j < n; j++)
			free(table[j]);
		}

	exit(0);
}