please dont rip this site

Language Ccpp Cref Examples LINKLST3.C

 
/************************************************************************ 
 *
 * Purpose: To demonstrate 'linked lists' This program will build a
 *	    linked list and place data into it. When the data is exausted
 *	    the contents of the list are O/P.
 *	    This example shows the use of 'typedef' on linked lists.
 *
 *          This is a "First in First out" (FIFO) list.
 *
 * Author:  M. J. Leslie
 *
 * Date:    11-May-95
 *
 ************************************************************************/

#include <stdlib.h>		/* malloc				*/

/************************************************************************/

				/* Declare a structure and give it a 
				 * data type name with 'typdef'		*/
typedef struct x {			
  char name[20];
  int age;
  struct x *next_rec;
} linklist;

/************************************************************************/

main()
{
  linklist *start_pointer;	/* Define pointers to the structure	*/
  linklist *next_pointer;

				/* Create some data to be placed in the
				 * Linked list.				*/
  char *names[]=
  {
    "Martin",
    "John  ",
    "Alex  ",
    ""
  };

  int ages[]={32, 43, 29, 0};

  int count=0;			/* General purpose counter.		*/

   /*===================================================================*
    =									=
    = 	Build a LINKED LIST and place data into it.			=
    =									=
    *===================================================================*/
       
				/* Initalise 'start_pointer' by reserving 
				 * memory and pointing to it		*/

  start_pointer=(linklist *) malloc (sizeof (linklist));

				/* Initalise 'next_pointer' to point
				 * to the same location.		*/
  next_pointer=start_pointer;

				/* Put some data into the reserved 
				 * memory.				*/

  strcpy(next_pointer->name, names[count]);
  next_pointer->age = ages[count];


				/* Loop until all data has been read	*/

  while ( ages[++count] != 0 )
  {
				/* Reserve more memory and point to it	*/

    next_pointer->next_rec=(linklist *) malloc (sizeof (linklist));

    next_pointer=next_pointer->next_rec;


    strcpy(next_pointer->name, names[count]);
    next_pointer->age = ages[count];
  }

  next_pointer->next_rec=NULL;

   /*===================================================================*
    =									=
    = 	Traverse the linked list and O/P all the data within it.	=
    =									=
    *===================================================================*/


  next_pointer=start_pointer;

  while (next_pointer != NULL)
  {
    printf("%s   ", next_pointer->name);
    printf("%d \n", next_pointer->age);
    next_pointer=next_pointer->next_rec;
  }
}

/************************************************************************ 
 *
 *	Program results.
 *
 * Martin   32 
 * John     43 
 * Alex     29 
 *
 ************************************************************************/



file: /Techref/language/ccpp/cref/EXAMPLES/linklst3.c, 2KB, , updated: 1997/4/21 09:52, local time: 2022/5/22 05:00,
TOP NEW HELP FIND: 
3.238.94.194:LOG IN

 ©2022 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.massmind.org/techref/language/ccpp/cref/EXAMPLES/linklst3.c"> language ccpp cref EXAMPLES linklst3</A>

Did you find what you needed?

 

Welcome to massmind.org!

 

Welcome to www.massmind.org!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .