test_stack.c

@@ -1,40 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include "stack.h"
-
-int main()
-{
-    StackNode *stack = NULL;
-
-    // Test 1: Push
-    int *a = malloc(sizeof(int));  // erstellt Daten
-    *a = 10;
-    int *b = malloc(sizeof(int));
-    *b = 20;
-    int *c = malloc(sizeof(int));
-    *c = 30;
-
-    stack = push(stack, a); //legt ein Element oben auf den Stack
-    stack = push(stack, b);
-    stack = push(stack, c);
-
-    // Test 2: Top
-    printf("Top (soll 30 sein): %d\n", *((int*)top(stack))); // Zeigt den Top vom Stack
-
-    // Test 3: Pop
-    stack = pop(stack);  // entfernt 30
-    free(c);
-
-    printf("Top nach pop (soll 20 sein): %d\n", *(int*)top(stack)); // // Zeigt den Top vom Stack
-
-    // Test 4: Nochmal pop
-    stack = pop(stack);  // entfernt 20
-    free(b);
-
-    printf("Top nach pop (soll 10 sein): %d\n", *(int*)top(stack));
-
-    // Test 5: clearStack
-    clearStack(stack);  //  gibt den gesamten Speicher frei
-
-    return 0;
-}

highscores.txt

@@ -1,8 +1 @@
-the_king;43984
-Regis;18924
-player_name;9929
-Kamto;7946
-player_name;5987
-Warren;4986
 player1;3999
-player_name;2991

stack.c

@@ -10,43 +10,24 @@
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data)
 {
-StackNode *newNode = (StackNode *)malloc(sizeof(StackNode));
+
-if(newNode == NULL)
-  return NULL;
-newNode->data = data;
-newNode->next = stack;
-return newNode;
 }
 
 // Deletes the top element of the stack (latest added element) and releases its memory. (Pointer to data has to be
 // freed by caller.)
 StackNode *pop(StackNode *stack)
 {
-    if (stack == NULL)
-        return NULL;
 
-    StackNode *newTop = stack->next;
-    free(stack);
-    return newTop;
 }
 
 // Returns the data of the top element.
 void *top(StackNode *stack)
 {
-if (stack == NULL)
+
-  return NULL;
-return stack->data;
 }
 
 // Clears stack and releases all memory.
 void clearStack(StackNode *stack)
 {
-StackNode *current = stack;
 
-while (current != NULL)
-  {
-  StackNode *next = current->next;
-  free(current);
-  current = next;
-  }
 }

stack.h

@@ -9,12 +9,6 @@ The latest element is taken from the stack. */
 
 //TODO: passenden Datentyp als struct anlegen
 
-
-typedef struct StackNode {
-    void *data;
-    struct StackNode *next;
-} StackNode;
-
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);