更新了文件名。开始了数据结构

Chapter07/arr.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void print_arr(int *p, int size)
+{
+    int i;
+    printf("%s:%d\n", __FUNCTION__, sizeof(p));
+    // out: 8 指针
+
+    for (i = 0; i < size; i++) printf("%d ", *(p + i));
+    printf("\n");
+}
+
+
+void func(int *p, int size)
+{
+    int *tmp;
+
+    for (int i = 0; i < size / 2; i++)
+    {
+        *tmp                = *(p + i);
+        *(p + i)            = *(p + size - 1 - i);
+        *(p + size - 1 - i) = *tmp;
+    }
+}
+
+int main()
+{
+    int a[] = {1, 3, 5, 7, 9};
+
+    // printf("%s:%d\n", __FUNCTION__, sizeof(a));
+    // out: 20 5*4
+
+    // print_arr(a, sizeof(a) / sizeof(*a));
+
+
+    for (int i = 0; i < sizeof(a) / sizeof(*a); i++)
+    {
+        printf("%d ", a[i]);
+    }
+    printf("\n");
+
+    func(a, sizeof(a) / sizeof(*a));
+
+    for (int i = 0; i < sizeof(a) / sizeof(*a); i++)
+    {
+        printf("%d ", a[i]);
+    }
+    printf("\n");
+
+    exit(0);
+}