空闲时的思考1（二维数组存储字符串和指针）

/**********************************************************************
* *   Copyright (c)2015,WK Studios
* *   Filename:  A.h
* *   Compiler: GCC  vc 6.0
* *   Author:WK
* *   Time: 2015 29 6
* **********************************************************************/
#include <iostream>
using namespace std;

void main()
{
char a[2][6]={"12345","abcde"};

cout<<a[0]<<endl;
cout<<a[1]<<endl;
cout<<a[0]+1<<endl;

cout<<*(a+1)<<endl;
cout<<*(*(a+1))<<endl;

cout<<*a<<endl;
cout<<**a<<endl;
cout<<a[0][0]<<endl;
cout<<a[0][0]+1<<endl;

char (*p)[6]=a;
cout<<p[1]<<endl;
cout<<*p<<endl;
cout<<**p<<endl;
cout<<p<<endl;
cout<<*p+1<<endl;
cout<<**p+1<<endl;

char (&q)[2][6]=a;
cout<<q<<endl;

}

void fun(int i=0,int=0,float n=0)//占位符可以实现代码的可扩展性，是一种面向未来的编程
{
cout<<i+n<<endl;
}

void main()
{
fun(1,0,0.5);

fun(1,0);//最后这个零会赋给这个占位符，后边的参数使用缺省值

}