Merge pull request zhayujie#5 from illyber/mybranch

为了消除errors和warnings，给C-Primer-Plus/Chapter_17/8pet/pet.c里的SeekItem,
gyy01230 · Feb 7, 2023 · ca44759 · ca44759
2 parents 01d5843 + 5c62678
commit ca44759
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/Chapter_17/8pet/pet.c b/Chapter_17/8pet/pet.c
@@ -13,10 +13,10 @@ typedef struct pair {
 static int count = 0;
 
 //局域函数声明
-static Pair SeekItem(const Tree * ptree, Item * pi);
-static int ToLeft(Item * p1, Item * p2);
-static int ToRight(Item * p1, Item * p2);
-static Trnode * MakeNode(Item * item);
+static Pair SeekItem(const Tree * ptree, const Item * pi);
+static int ToLeft(const Item * p1, const Item * p2);
+static int ToRight(const Item * p1, const Item * p2);
+static Trnode * MakeNode(const Item * item);
 static void AddNode(Trnode * new_node, Trnode * root);
 static void DeleteNode(Trnode * * ptr);
 static void InOrder(Trnode * root, void (*pfun)(Item item));
@@ -181,7 +181,7 @@ static Pair SeekItem(const Tree * ptree, const Item * pi)
 }
 
 //项在左边
-static int ToLeft(Item * p1, Item * p2)
+static int ToLeft(const Item * p1, const Item * p2)
 {
     if (strcmp(p1->name, p2->name) < 0)
         return 1;
@@ -190,15 +190,15 @@ static int ToLeft(Item * p1, Item * p2)
 }
 
 //项在右边
-static int ToRight(Item * p1, Item * p2)
+static int ToRight(const Item * p1, const Item * p2)
 {
     if (strcmp(p1->name, p2->name) > 0)
         return 1;
     else
         return 0;
 }
 
-static Trnode * MakeNode(Item * item)
+static Trnode * MakeNode(const Item * item)
 {
     Trnode * pnode;