二级指针引用例子

 1 #include "stdafx.h"
 2 #include 
 3 #include 
 4 
 5 
 6 void MyClose(FILE** lpFile)
 7 {
 8   *lpFile = NULL;
 9 }
10 
11 void MyClose2(FILE* lpFile)
12 {
13   lpFile = NULL;
14 }
15 
16 int main(int argc, char* argv[])
17 {
18 
19   FILE* lpFile1 = (FILE*)0x123;
20 
21   FILE* lpFile2 = (FILE*)0x456;
22 
23   MyClose(&lpFile1);
24   MyClose2(lpFile2);
25 
26   return 0;
27 }

 

转载于:https://www.cnblogs.com/Fightingbirds/archive/2012/12/30/2839485.html