130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
#include <stdio.h>
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#include "utlist.h"
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typedef struct el {
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int id;
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struct el *next, *prev;
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} el;
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int main()
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{
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int i;
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el els[10], *e;
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el *head = NULL;
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for(i=0; i<10; i++) {
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els[i].id=(int)'a'+i;
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}
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/* test CDL macros */
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printf("CDL macros\n");
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CDL_PREPEND(head,&els[0]);
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CDL_PREPEND(head,&els[1]);
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CDL_PREPEND(head,&els[2]);
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CDL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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/* point head to head->next */
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printf("advancing head pointer\n");
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head = head->next;
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CDL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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/* follow circular loop a few times */
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for(i=0,e=head; e && i<10; i++,e=e->next) {
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printf("%c ", e->id);
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}
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printf("\n");
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/* follow circular loop backwards a few times */
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for(i=0,e=head; e && i<10; i++,e=e->prev) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting b\n");
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CDL_DELETE(head,&els[1]);
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CDL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting head (a)\n");
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CDL_DELETE(head,&els[0]);
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CDL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting new head (c)\n");
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CDL_DELETE(head,&els[2]);
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CDL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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/* test DL macros */
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printf("DL macros\n");
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DL_PREPEND(head,&els[0]);
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DL_PREPEND(head,&els[1]);
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DL_PREPEND(head,&els[2]);
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DL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting c\n");
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DL_DELETE(head,&els[2]);
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DL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting a\n");
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DL_DELETE(head,&els[0]);
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DL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting b\n");
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DL_DELETE(head,&els[1]);
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DL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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/* test LL macros */
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printf("LL macros\n");
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LL_PREPEND(head,&els[0]);
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LL_PREPEND(head,&els[1]);
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LL_PREPEND(head,&els[2]);
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LL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting c\n");
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LL_DELETE(head,&els[2]);
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LL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting a\n");
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LL_DELETE(head,&els[0]);
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LL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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printf("deleting b\n");
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LL_DELETE(head,&els[1]);
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LL_FOREACH(head,e) {
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printf("%c ", e->id);
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}
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printf("\n");
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return 0;
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}
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