ca34a_demo_c ++ _ txwtech _ two-dimensional array pointers and multidimensional arrays

/ * ca34a_demo_c ++ _ txwtech multidimensional array
multidimensional arrays: an array of arrays
initialize multidimensional array
index multidimensional array reference
pointers and multidimensional array
pointing multidimensional array using typedef simplified pointer

int (* ip) [4] ; // ip points to an array of type int, which has an array of four elements. (An array of pointers, each of the four elements)
int * IP [. 4]; // IP is an array, which has four array elements, each of which is int pointer (an array, there are four pointers)
* /

/*ca34a_demo_c++_txwtech多维数组
多维数组:数组的数组
多维数组的初始化
多维数组的下标引用
指针和多维数组
用typedef简化指向多维数组的指针

int(*ip)[4];//ip是指向int类型的数组，数组里面有4个元素。（1个指针数组，每个有4个元素）
int *ip[4];//ip是一个数组，数组里面有4个元素，每一个是int的指针（一个数组，有4个指针）
*/
#include <iostream>

using namespace std;
typedef int int_array[4];


int main()
{
	//最好是定义常量
	const size_t rowSize = 3;
	const size_t colSize = 4;
	//int ia[3][4]=
	int ia[rowSize][colSize] =
	{
		{0,1,2,3},
	    {4,5,6,7},
	    {8,9,10,11}
	};
	//cout << ia[1][2] << endl;
	for (size_t i = 0; i != rowSize; ++i)
	{
		for (size_t j = 0; j != colSize; ++j)
		{
			cout << ia[i][j] << " ";
		}
		cout << endl;
	}
	cout << endl;
	//指针来显示
	for (int_array *p = ia; p != ia + 3; ++p)
	{
		for (int *q = *p; q != *p + 4; ++q)
			cout << *q << " ";
		cout << endl;
	}
	cout << endl;
	//指针来显示方法2：
	int(*p)[4];
	for (p = ia; p != ia + 3; ++p) 
	{
		for (int *q = *p; q != *p + 4; ++q)
			cout << *q << " ";
		cout << endl;
	}

	return 0;//后面的就不执行了。
	int_array *ip;//==int(*ip)[4];//typedef int int_array[4];
	//int(*ip)[4];//ip是指向int类型的数组，数组里面有4个元素
	//int *ip[4];//ip是一个数组，数组里面有4个元素，每一个是int的指针
	ip = ia;//ip={0,1,2,3}
	for (int *q = *ip; q != *ip + 4; ++q)
		cout << *q << endl;
	cout << endl<<endl;
	ip = &ia[2];// ip={8,9,10,11}
	for (int *q = *ip; q != *ip + 4; ++q)
		cout << *q << endl;
	//getchar();
	return 0;
}