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src/winter/lib/meson.build

+lib_utils = library('utils', 'utils.c')

src/winter/lib/utils.c

+#include <stdio.h>
+#include <stdlib.h>
+
+int *
+get_ints (int         argc,
+          char      **argv,
+          int         n,
+          const char *prompt)
+{
+    int *ret = malloc (sizeof (int) * n);
+
+    if (argc != (n + 1))
+    {
+        for (int i = 0; i < n; i++)
+        {
+            printf ("%s: ", prompt);
+            scanf ("%d", &ret[i]);
+        }
+    }
+    else
+    {
+        for (int i = 0; i < n; i++)
+            sscanf (argv[i + 1], "%d", &ret[i]);
+    }
+    
+    return ret;
+}

src/winter/lib/utils.h

+#pragma once
+
+int *
+get_ints (int         argc,
+          char      **argv,
+          int         n,
+          const char *prompt);

src/winter/list/meson.build

+sources = files('slist.c', 'test.c')
+
+executable('slist', sources)

src/winter/list/slist.c

+#include "slist.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+SList *
+slist_prepend (SList *list,
+               void  *data)
+{
+	SList *new = malloc (sizeof (SList));
+	new->data = data;
+	new->next = list;
+
+	return new;
+}
+
+void
+slist_free_all (SList    *list,
+                FreeFunc  func)
+{
+    for (SList *l = list; l; l = l->next)
+        func (l);
+}

src/winter/list/slist.h

+#pragma once
+
+typedef void (*FreeFunc) (void *value);
+
+typedef struct _SList SList;
+struct _SList
+{
+	void  *data;
+	SList *next;
+};
+
+SList * slist_prepend (SList *list,
+                       void  *data);
+
+void    slist_free_all (SList   *list,
+                        FreeFunc func);

src/winter/list/test.c

+#include "slist.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static SList *
+add_data (SList *list)
+{
+    char buffer[128];
+
+    printf ("Input the data ");
+    scanf ("%s", buffer);
+
+    char *str = strdup (buffer);
+    return slist_prepend (list, str);
+}
+
+static void
+print_data (SList *list)
+{
+    SList *l;
+
+    for (l = list; l != NULL; l = l->next)
+    {
+        printf ("%s\n", (char *) l->data);
+    }
+}
+
+int
+main (void)
+{
+    SList *list = NULL;
+
+    while (1)
+    {
+        list = add_data (list);
+        print_data (list);
+    }
+
+    slist_free_all (list, free);
+
+    return 0;
+}