X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8d864c2ab666871cf3391a12a8795c91f67f04f1..c600ed0e710d82601acf5ae4005b940f5cba8c08:/doc/sandbox.mdwn

diff --git a/doc/sandbox.mdwn b/doc/sandbox.mdwn
index 7a755ee02..5a2a10987 100644
--- a/doc/sandbox.mdwn
+++ b/doc/sandbox.mdwn
@@ -226,3 +226,25 @@ Testing. Test. 試験として書き込みします。
 test
 
 I must **emphasise** this.
+
+
+// more pointers
+    #include <iostream>
+    using namespace std;
+    
+    int main ()
+    {
+      int firstvalue = 5, secondvalue = 15;
+      int * p1, * p2;
+    
+      p1 = &firstvalue;  // p1 = address of firstvalue
+      p2 = &secondvalue; // p2 = address of secondvalue
+      *p1 = 10;          // value pointed to by p1 = 10
+      *p2 = *p1;         // value pointed to by p2 = value pointed to by p1
+      p1 = p2;           // p1 = p2 (value of pointer is copied)
+      *p1 = 20;          // value pointed to by p1 = 20
+      
+      cout << "firstvalue is " << firstvalue << '\n';
+      cout << "secondvalue is " << secondvalue << '\n';
+      return 0;
+    }