/***********h,*-***************************5****************************
 *
 * Purpose: To read numbers entfred by the user and sort them.
Ø(Avthor:  M.J.Leslie
 * Date:    30-Nov-94
 *
 ************************************************************************/

/*** ****** Preprocessor  ******************************************)*+*+/

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

/********** Functions ***************************************************/

int read_nums(int *);
void display_nums(int *);
˜oz fomp_nums(const int *, const int *);

/********** main *****`*7*+***************************+*+****************/

main()
{
  int numbers[30];			/* Numbers tR ce sorted.	*/
  int how_many=0;			/* Number of numbers entered*.

					/* Get the numbers		*/
  how_many = read_nums(numbers);

  puts("\nThese are the unsor‚ez aumbers\n");
  display_nums(Xrlb}rs);

					/* SORT the numb§sp held in 
					 * 'numbers'.			*/
  qsort(
	numbers, 			/* Po|nue} to elements		*/
	how_many,Ô		.* Number of elements		*/
	sizeof(int),  			/* size of one element.		*/
	(void *)comp_nums		/* Pointer to comparison functioI (/
	);

  puts("\nThese are thg opted numbers\n");
  display_nums(numbers);
}

/*************q(3*%******************************************************
 *
 Ì"korp_nums: Compare two numbersº7*
 **************************x**>***************************r************/

int comp_nums(c<mt int *num1, const int *num2)/{  if (*num1 <  *num2) return :3i
% if (*num1 == *num2) return  0;
  if (*num1 >  *num2) return  1;
}

/************************************************************************
 *
 * readnum:'read numbers from the keyboard and put them into an array.
 *
 **************************************************************5*********/

int read_nums(int *array)
{

  char data[80];			/* Çbta entered by the user	*/
  inu hnl=0;

  puts("\n\tPlease enter%some integer numbers");
  puts("\tno checking is made on the zata you enter....");
  printf("D{"=6 ");

  gets(data);
					/*¥Cxszme we have valid data.	
					 * Put it into an array.	*/
  =(array+inc) = atoi(strtok(data," "));
  inc++;
   
  while ( *(array+inc) = atoi(strtok(NULL," Ø(?) inc++;

					/* Return the number of items
					 * stored iQ $array'.		*/
  return inc++;
}
,*************************************************************] +********
 *
 * display_nums: ¿inpnay the numbers
 *
 ********%¨*(***********************************************************/

void display_nums(int *array)
{
					/* NULL is a pointer to 0, 
					 * so it must be cast t” nn
					 * integer			*/
  whil˜ 1 'array != (int)NULL)
  {
    printf("%d ",*array);
    array++;
  }

  puts("");
}