hour11_1.cpp

来自「《24学时精通c++》的随书源码的下半部分。欢迎下载学习。」· C++ 代码 · 共 33 行

 //Listing 11.6 Demonstrates passing by reference and pointers in the same call
 // 
 #include <iostream>

 void swap(int &x, int *y); 
 // the "&" says that the function expects to get references
 // the "*" says that the function expects to get pointers 
 int main()
 {
     int x = 5, y = 10;

     std::cout << "Main. Before swap, x: " << x
                                 << " y: " << y << "\n";
     swap(x,i &y);
     std::cout << "Main. After swap, x: " << x
                                << " y: " << y << "\n";
     return 0;
 }

 void swap (int &rx, int *ry)
 {
     int temp;

     std::cout << "Swap. Before swap, rx: " << rx
                                 << " ry: " << ry << "\n";

     temp = rx;
     rx = *ry;
     *ry = temp;

     std::cout << "Swap. After swap, rx: " << rx
                                << " ry: " << ry << "\n";
 }