[C++知识库]C++通过地址传递函数交换两变量的值

#include<iostream>
using namespace std;
void swap(int* x, int* y)//定义指针来存储地址
{
	int temp = *x;//*x 解引用找到其内部存储的值赋给变量temp
	*x = *y;
	*y = temp;
}
int main()
{
	int a = 10, b = 20;//定义两个变量a，b并赋值
	swap(&a,&b);
	cout << "a=" << a << endl;
	cout << "b=" << b << endl;
	system("pause");
	return 0;
}