镇乃天子

666/交换3.cpp

@@ -0,0 +1,18 @@
+#include<iostream>
+using namespace std;
+int main(){
+
+   int a=25,b=32,tmp; 
+   int *ptr_a, *ptr_b;
+
+    ptr_a=&a;
+    ptr_b=&b;
+    
+    cout<<*ptr_a<<"  "<<*ptr_b<<"  ";
+    cout<<ptr_a<<"  "<<ptr_b<<"  ";
+        tmp=*ptr_a;
+       *ptr_a=*ptr_b;
+        *ptr_b=tmp;
+        cout<<a<<"  "<<b<<endl;
+    return 0;
+}