[C++]指针/指针数组/数组指针/多维指针/单值指针/多值指针

 int main(){ 	
 	//单值指针(指向单个值得指针，类同普通变量)
	int *px = new int;
 	*px = 100;
 	printf("%d",*px);
 	delete px;
	
	//多值指针(指向多个元素的指针，类同普通数组变量)
	int *p = new int[2];
	p[0] = 2;
	p[1] = 99;
	printf("%d %d\n",p[0],p[1]);//2 99
	delete [] p;
	
	//二维指针(属于多维指针)
	int **pp = new int * [3];//m:宽  （即 列数）
	for(int i = 0;i < 3;i++){
		pp[i] = new int [2];//列长(即 行数)
	}
	for(int i = 0;i < 3;i++){
		delete [] pp[i];
	}
	
	//三维指针(属于多维指针)
	int ***ppp = new int ** [3];//假定数组第一维为m， 第二维为n， 第三维为h
	for(int i = 0;i < 3;i++){
		ppp[i] = new int * [2];
		for(int j = 0; j < 2; j++){
			ppp[i][j] = new int [4];
		}
	} 
	for( int i=0; i < 3; i++ ){
		for( int j=0; j < 2; j++ ){
	        delete ppp[i][j];
		}
		delete ppp[i];
	}
	
	//数组指针(又称为 行指针；本质：指针) 
	int array[2][3] = {1,2,3,4,5,6};
	int (*lineP)[3] = array;	
	delete [] lineP[0];
	delete [] lineP[1];
	delete [] lineP[2];
	
	//指针数组(指向多个指针) 
	int m = 100; 
	int *pA = &m;
	int *pB = &m;
	int *pC = &m; 
	int *pa[2]; 
	pa[0] = pA; 
	pa[1] = pB; 
	printf("%d %d",*(pa[0]),*(pa[1]));//100 100

 }