Five cviko

cv5/a_train.c

@@ -0,0 +1,54 @@
+#include "a_train.h"
+#include <stdio.h>
+
+struct car* add_car(struct car* first,const char* target) {
+    struct car *newCar = calloc(1,sizeof(struct car));
+	strcpy(newCar->value,target);
+	
+	if(first==NULL){
+		first = newCar;
+	}else{
+		struct car* this = first;
+		while(this->next!=NULL){
+			this = this->next;
+		}
+		this->next = newCar;
+	}
+	return first;
+}
+
+void print_train(struct car* first) {
+	for(struct car* this = first;this!=NULL;this = this->next){
+		printf("%s\n",this->value);
+	}
+}
+
+void cancel_train(struct car* first){
+	if(first==NULL){
+		return;
+	}
+	cancel_train(first->next);
+	free(first);
+}
+
+
+struct car* clear_train(struct car* first, const char* target) {
+	
+	struct car *previous = NULL; 
+	for(struct car *this = first;this!=NULL;this=this->next){
+		if(strcmp(this->value,target)==0){
+			if(previous==NULL){
+				first = first->next;
+				free(this);
+				break;
+			}else{
+				previous->next = this->next;
+				free(this);
+				break;
+			}
+			
+		}
+		previous = this;
+	}
+	return first;
+}

cv5/a_train.h

@@ -0,0 +1,51 @@
+#ifndef TRAIN_H
+#define TRAIN_H
+#define SIZE 100
+
+/**
+ * Jeden vozen vlaku
+ */
+struct car {
+    /**
+     * Nazov cielovej  stanice
+     */
+    char value[SIZE];
+    /**
+     * Smenik na dalsi vozen
+     */
+    struct car* next;
+};
+
+/**
+ * Prida vozen na koniec vlaku.
+ *
+ * @arg nazov cielovej stanice, ktory sa ma priradit novemu voznu.
+ * @return smernik na zaciatok vlaku.
+ */
+struct car* add_car(struct car* first,const char* target);
+
+
+/**
+ * Vypise vsetky vozne vo vlaku
+ *
+ * @arg smernik na prvy vozen
+ */
+void print_train(struct car* first);
+
+/**
+ * Zrusenie vsetkych voznov vo vlaku.
+ * @arg smernik na prvy vozen
+ */
+void cancel_train(struct car* first);
+
+/**
+ * Vyradenie vsetkych voznov, ktorych cielova stanica je target
+ *
+ * @arg smernik na prvy vozen
+ * @arg cielova stanica, ktora sa ma vyradit z vlaku.
+ * @return smernik na novy prvy vozen
+ *
+ */
+struct car* clear_train(struct car* first,const char* target);
+
+#endif // TRAIN_H