SS 2025

2025-07-30 15:57:48 +02:00
parent e49fcfac46
commit a639c34cee
273 changed files with 20151 additions and 0 deletions
@@ -0,0 +1,136 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct {
+	float x;
+	float y;
+}Point;
+
+typedef struct Listelement Listelement;
+
+struct Listelement {
+	Point pnt;
+	Listelement *next;
+};
+
+typedef struct {
+	char* name;
+	Listelement *first;
+} Polygon;
+
+void append(Polygon * pz, Point pnt) {
+  Listelement * new = malloc(sizeof(Listelement));
+
+  if (!new) {
+	perror("Malloc failed.");
+	exit(1);
+  }
+
+  new->pnt = pnt;
+  new->next = NULL;
+
+  if (pz->first == NULL){
+    pz->first = new;
+  } else {
+    Listelement * tmp = pz->first;
+
+    while (tmp->next != NULL) {
+      tmp = tmp->next;
+    }
+
+    tmp->next = new;
+  }
+}
+
+void polyPrint(Polygon *pz){
+	if (pz == NULL || pz->first == NULL){
+		printf("Kein Polygon.");
+		return;
+	}
+	
+	printf("%s\n",pz->name);
+
+	Listelement *le = pz->first;
+	while(le != NULL){
+		printf("(%f, %f)\n", le->pnt.x, le->pnt.y);
+		le = le->next;
+	}	
+}
+
+void shorten(Polygon *pz){
+	if (pz == NULL || pz->first == NULL){
+		printf("Kein Polygon.");
+	}	
+
+	Listelement *le = pz->first;
+	while(le->next->next != NULL){
+		le = le->next;
+	}
+	free(le->next);
+	le->next = NULL;
+}
+
+Polygon mirror(Polygon *pz){
+
+	Polygon newPZ;
+	newPZ.first = NULL;
+
+	if (pz == NULL || pz->first == NULL){
+		newPZ.name = NULL;
+		printf("Kein Polygon.");
+		return newPZ;
+	}	
+	
+	const char *prefix = "Copy of ";
+    size_t newNameLen = strlen(prefix) + strlen(pz->name) + 1;
+    char *newName = malloc(newNameLen);
+    if (!newName) {
+        perror("Malloc failed");
+        exit(1);
+    }
+    strcpy(newName, prefix);
+    strcat(newName, pz->name);
+    newPZ.name = newName;	
+
+    Listelement *le = pz->first;
+    while (le != NULL) {
+        Listelement *newElem = malloc(sizeof(Listelement));
+        if (!newElem) {
+            perror("Malloc failed");
+            exit(1);
+        }
+        newElem->pnt = le->pnt;
+
+        newElem->next = newPZ.first;
+        newPZ.first = newElem;
+
+        le = le->next;
+    }	
+
+	return newPZ;
+}
+
+int main() {
+	Point pnt = (Point){.x = 10, .y = 20};
+	Point pnt2 = (Point){.x = 20, .y = 30};
+	Listelement first = {.pnt = pnt, .next = NULL};
+	Polygon pz;
+	pz.name = "Mein Polygon";
+	pz.first = &first;
+	append(&pz, pnt2);
+	polyPrint(&pz);
+	shorten(&pz);
+	polyPrint(&pz);
+	append(&pz, (Point){.x = 30, .y = 40});
+	append(&pz, (Point){.x = 50, .y = 40});
+	append(&pz, (Point){.x = 60, .y = 40});
+	append(&pz, (Point){.x = 70, .y = 40});
+
+	polyPrint(&pz);
+	Polygon pzMirror = mirror(&pz);
+	polyPrint(&pzMirror);
+
+
+	return 0;
+}