Implementing swap() with References - C++ Data Type

C++ examples for Data Type:Reference

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Description

Implementing swap() with References

Demo Code

#include <iostream> 
 
void swap(int &x, int &y); 
 
int main() //from  w w w.  ja  va 2s. com
{ 
    int x = 5, y = 10; 
 
    std::cout << "Main. Before swap, x: " << x  
                  << " y: " << y << std::endl; 
    swap(x, y); 
    std::cout << "Main. After swap, x: " << x  
                  << " y: " << y << std::endl; 
    return 0; 
} 
   
void swap(int &rx, int &ry) 
{ 
    int temp; 
   
    std::cout << "Swap. Before swap, rx: " << rx  
                  << " ry: " << ry << std::endl; 
   
    temp = rx; 
    rx = ry; 
    ry = temp; 
   
    std::cout << "Swap. After swap, rx: " << rx  
                  << " ry: " << ry << std::endl; 
}

Result


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