就拿C++指针传递、引用传递开博吧

对C++的一些基础用法理解不深，这一次就拿C++传递值来开个头，以后把C++的基本知识搞清楚。牛人轻拍。

#include <iostream>
using namespace std;

void swap(int* a,int* b)//指针传递，*号表示主函数实参的地址
{
int temp;
temp = *a;
*a = *b;
*b = temp;
}

void swap_cite(int &a,int &b)//引用传递，间接寻址主函数实参变量
{
int temp;
temp = a;
a = b;
b = temp;
}

void main()
{
int x,y;
printf("Enter x,y:\n");
scanf("%d %d",&x,&y);
printf("original data:x=%d,y=%d\n",x,y);
swap(&x,&y);
printf("after swap:x=%d,y=%d\n",x,y);
printf("--------------------------\n");
swap_cite(x,y);
printf("after swap_cite:x=%d,y=%d\n",x,y);
}

运行结果：

Enter x,y:

2 8

original data:x=2,y=8

after swap:x=8,y=2

--------------------------

after swap_cite:x=2,y=8

Press any key to continue