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