c語言之指針與數組

多級指針：

int main()
{
	int i=10;
	int *p=&i;
	int **pp=&p;
	int ***ppp=&pp;
cout<<p<<":"<<*p<<":"<<endl;  
cout<<pp <<":"<<*pp<<":"<<**pp<<":"<<endl;
cout<<ppp<<":"<<*ppp<<":"<<**ppp <<":" <<***ppp<<":"  <<endl;
	return 0;
}

 數組指針

void main()
{
	int a[3][3]={ 1,2,3,4,5,6,7,8,9};
 	int (*q)[3];//數組指針

	q=a;
	cout<<q<<endl;//0012ff24
	cout<<*q<<endl;//0012ff24
	cout<<*q+1<<endl;//0012ff28//p+4bit
	cout<< *q[0]<<endl;//1
	cout<< **q <<endl;//1  等同上
	cout<<**q+100<<endl;//101
	cout<<**(q+1)<<endl;//4
	cout<<*(*q+1)<<endl;//2
	cout<<q+1<<endl;//0012ff30
	cout<<*(q+1)<<endl;//0012ff30
	cout<<q+3<<endl;//0012ff48,
	cout<<*q+1<<endl;


}

指針數組

void main()
{

	int a[3][3]={ 1,2,3,4,5,6,7,8,9};
 	int *q[3];//指針數組
	 for(int i=0;i<3;i++)
      q[i]=a[i];
	 cout<<q<<endl;//ff18   q本身
	 cout<<*q<<endl;//ff24   a[0][0]地址
	 cout<<*q+1<<endl;//ff28 a[0][1]
	 cout<<*(q+1)<<endl;//ff30  a[1][0]
	 cout<<**q<<endl;//1     a[0][0]的值
	 cout<<*(*q+1)<<endl;//2     a[0][1]的值
	 cout<<**(q+1)<<endl;//4       a[1][0]的值
}

#include<stdio.h>
#include<iostream>
using namespace std;

 
char *c[]={"ENTER","NEW","POINT","FIRST"};
char **cp[]={c+3,c+2,c+1,c};
char ***cpp=cp;
int main(void)
{
 	printf("%s   ",**++cpp);//POINT   ++cpp
  	printf("%s    ",*--*++cpp+3);// ER  
  	printf("%s    ",*cpp[-2]+3);//ST
	printf("%s\n",cpp[-1][-1]+1);//EW
			return 0;
}