更新了文件名。开始了数据结构

Chapter11/ds/line/list/linklist/simple/nohead/main.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "nohead.h"
+
+int main()
+{
+    int             i, ret;
+    struct node_st *list = NULL;
+    struct score_st tmp;
+
+    for (i = 0; i < 7; i++)
+    {
+        tmp.id = i;
+        snprintf(tmp.name, NAMESIZE, "stu%d", i);
+        tmp.math    = rand() % 100;
+        tmp.chinese = rand() % 100;
+
+        // list = list_insert(list, &tmp);
+        ret = list_insert(&list, &tmp);
+        if (0 != ret)
+            exit(1);
+    }
+
+
+    list_show(list);
+
+    printf("\n\n");
+
+    int              id = 13;
+    struct score_st *ptr;
+    ptr = list_find(&list, id);
+    if (NULL == ptr)
+        printf("Can not find!\n");
+    else
+        printf("%d %s %d %d", ptr->id, ptr->name, ptr->math, ptr->chinese);
+
+
+#if 0
+    list_delete(&list);
+
+    list_show(list);
+#endif
+
+    list_destroy(&list);
+
+    exit(0);
+}

Chapter11/ds/line/list/linklist/simple/nohead/makefile

@@ -0,0 +1,7 @@
+all:main
+
+main:main.o nohead.o
+	$(CC) $^ -o $@
+
+clean:
+	rm *.o main -rf

Chapter11/ds/line/list/linklist/simple/nohead/nohead.c

@@ -0,0 +1,106 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "nohead.h"
+
+
+#if 0
+struct node_st *list_insert(struct node_st *list, struct score_st *data)
+{
+    struct node_st *new;
+
+    new = malloc(sizeof(*new));
+    if (NULL == new)
+        return NULL;
+
+    new->data = *data;
+    new->next = list;
+    list      = new;
+
+    return list;
+}
+#endif
+
+int list_insert(struct node_st **list, struct score_st *data)
+{
+    struct node_st *new;
+
+    new = malloc(sizeof(*new));
+    if (NULL == new)
+        return -1;
+
+    new->data = *data;
+    new->next = *list;
+    *list     = new;
+
+    return 0;
+}
+
+void list_show(struct node_st *list)
+{
+    struct node_st *cur;
+
+    for (cur = list; NULL != cur; cur = cur->next)
+    {
+        printf("%d %s %d %d\n",
+               cur->data.id,
+               cur->data.name,
+               cur->data.math,
+               cur->data.chinese);
+    }
+}
+
+// 删除首位
+int list_delete(struct node_st **list)
+{
+    struct node_st *cur;
+
+    if (NULL == *list)
+        return -1;
+
+    cur   = *list;
+    *list = (*list)->next;
+
+    free(cur);
+
+    return 0;
+}
+
+struct score_st *list_find(struct node_st **list, int id)
+{
+    struct node_st *cur;
+
+    if (NULL == *list)
+        return NULL;
+
+    // for (cur = *list; NULL != cur->next; cur = cur->next)
+    // !!! 是cur不为空
+    for (cur = *list; NULL != cur; cur = cur->next)
+    {
+        if (id == cur->data.id)
+        {
+            // printf("%d %s %d %d\n",
+            //        cur->data.id,
+            //        cur->data.name,
+            //        cur->data.math,
+            //        cur->data.chinese);
+            return &(cur->data);
+        }
+    }
+
+    return NULL;
+}
+
+int list_destroy(struct node_st **list)
+{
+    struct node_st *cur;
+
+    if (NULL == list)
+        return -1;
+
+    for (cur = *list; NULL != cur; cur = *list)
+    {
+        *list = cur->next;
+        free(cur);
+    }
+}

Chapter11/ds/line/list/linklist/simple/nohead/nohead.h

@@ -0,0 +1,26 @@
+#define NAMESIZE 32
+
+struct score_st
+{
+    int  id;
+    char name[NAMESIZE];
+    int  math;
+    int  chinese;
+};
+
+struct node_st
+{
+    struct score_st data;
+    struct node_st *next;
+};
+
+// struct node_st *list_insert(struct node_st *list, struct score_st *data);
+int list_insert(struct node_st **list, struct score_st *data);
+
+void list_show(struct node_st *list);
+
+int list_delete(struct node_st **list);
+
+struct score_st *list_find(struct node_st **list, int id);
+
+int list_destroy(struct node_st **list);