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P06_Lösung_Andrin/list.c

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+#include "list.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include "person.h"
+
+int addPerson(node_t *coming,node_t *last,person_t *neu) {
+	node_t *p = malloc(sizeof(node_t));
+	if(p == NULL) {
+		return 0;
+	}			
+	last->next = p;
+	p->next = coming;
+	p->content = *neu;
+	return 1;
+}
+
+int insert_list(node_t *liste,person_t *neu) {
+
+	node_t *coming = liste->next;
+	node_t *last = liste;
+	
+	//falls Liste leer
+	if(coming == liste) {
+		return addPerson(coming,liste,neu);
+	}
+	
+	while(coming != liste) {
+		if(person_compare(&coming->content,neu) == 0){
+			return 0;
+		}
+		if(person_compare(&coming->content,neu) > 0) {
+			return addPerson(coming,last,neu);
+		}
+		last = coming;
+		coming = coming->next;	
+	}
+	return addPerson(coming,last,neu);
+}
+
+int remove_list(node_t *liste,person_t *entfernen) {
+
+	node_t *knoten = liste;
+	
+	do {
+		node_t *nextKnoten = knoten->next;
+		if(person_compare(entfernen,&nextKnoten->content) == 0) {
+			knoten->next = nextKnoten->next;
+			free(nextKnoten);
+			return 1;
+		}
+		
+		knoten = knoten->next;
+	}
+	while(knoten != liste);
+	 
+	return 0;
+}
+
+void clear_list(node_t *liste) {
+	
+	node_t *knoten = liste->next;
+	node_t *delete;
+	while(knoten != liste) {
+		delete = knoten;
+		knoten = knoten->next;
+		free(delete);
+	}
+	liste->next = liste;
+}
+
+void show_list(node_t *liste) {	
+	node_t *next = liste->next;
+	
+	if(next == liste) {
+		puts("Die Liste ist leer!");
+	}else {
+		while(next != liste) {
+			printf("Name: %s First Name: %s Age: %d\n",next->content.name,next->content.first_name,next->content.age);
+			next = next->next;
+		}
+	}
+}
+