4.7－引用传递.cpp

来自「Visual C++的课件」· C++ 代码 · 共 32 行

//Listing 9.7 Demonstrates passing by reference
// using references!

#include <iostream.h>

void swap(int &x, int &y);

int main()
{
	int x = 5, y = 10;

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

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

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

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


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

}