7.7指针和函数

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#include 
using namespace std;
void swap01(int a, int b)
{
	int temp = a;
	a = b;
	b = temp;

}
void swap02(int *p1, int *p2)
{
	int temp = *p1;
	*p1 = *p2;
	*p2 = temp;

}

int main7_7()
{
	//1.值传递
	int a = 10;
	int b = 20;

	//int *p = &a;
	//p = &b;

	swap02(&a, &b);
	cout << a << b << endl;
	//2.地址传递
	system("pause");
	return 0;
}

#include 
using namespace std;

int main7_6()
{
	//指针访问数组中的元素
	int arr[] = {1,2,3,4,5,6,7,8,9,10};
	int *p = arr;
	cout << *p << endl;
	for (int i = 0; i < 10; i++)
	{
		cout <<*p << endl;
		p++;
	}
	system("pause");
	return 0;
}