Update ex6_10.cpp

ch06/ex6_10.cpp

@@ -1,38 +1,29 @@
-//!@Alan
+//!@Yue wang
 //!
 //! Exercise 6.10:
 //! Using pointers, write a function to swap the values of two ints.
 //! Test the function by calling it and printing the swapped values.
 //!
-
-
-
 #include <iostream>
 #include <string>
 #include <stdexcept>
 
-using namespace std;
 
-void swap(int* _n1, int* _n2);
+void swap(int* lhs, int* rhs)
+{
+    int tmp;
+    tmp = *lhs;
+    *lhs = *rhs;
+    *rhs = tmp;
+}
 
 int main()
 {
-    int n1, n2;
-
-    cout<<"Please Enter:\n";
-    while(cin>>n1>>n2)
+    for (int lft, rht; std::cout << "Please Enter:\n", std::cin >> lft >> rht; )
     {
-        swap(&n1, &n2);
-        cout<<n1<<" "<<n2<<endl;
+        swap(&lft, &rht);
+        std::cout << lft << " " << rht << std::endl;
     }
 
     return 0;
 }
-
-void swap(int* _n1, int* _n2)
-{
-    int temp;
-    temp = *_n1;
-    *_n1 = *_n2;
-    *_n2 = temp;
-}