Pointers and arrays--pointers and two-dimensional arrays 2

Pointer to a one-dimensional array char (*P) [10];
Pointer to a one-dimensional array of type typedef char (*type_p2array) [10];
The pointer can point to an array, and the effect is the same, but pointers and arrays are not equivalent. {sizeof results are different, and the pointer can also point to other types of data. }

#include <stdio.h>typedef int (*tp_parry1) [3]; #define UART_PRINTF printfvoid F1 (void) {int a[2][3] = {{0,1,2},{    10,11,12}};//A: Two-dimensional array name, equal: pointer to one-dimensional array {0,1,2} tp_parry1 p = A;         int (*Q) [3] = A; int (*t) [2] = a;//warning:initialization from incompatible pointer type//int** x = A; CRITICAL ERROR, may leads to segmentation fault.    NO space for Ptrs. Pointer binding law: 1 (*Q) parentheses highest priority, indicating that q is a pointer.    2 Right [], means pointing to an array//3 to the right no, to the left, the element that represents the array is of type int.    uart_printf ("a00:%d\n", a[0][0]);    uart_printf ("a01:%d\n", a[0][1]);    uart_printf ("a02:%d\n", a[0][2]);    uart_printf ("a10:%d\n", a[1][0]);    uart_printf ("a11:%d\n", a[1][1]);    uart_printf ("a12:%d\n", a[1][2]);    uart_printf ("p00:%d\n", a[0][0]);    uart_printf ("p01:%d\n", a[0][1]);    uart_printf ("p02:%d\n", a[0][2]);    uart_printf ("p10:%d\n", a[1][0]);    uart_printf ("p11:%d\n", a[1][1]);       uart_printf ("p12:%d\n", a[1][2]);    uart_printf ("q00:%d\n", a[0][0]); uart_printf ("q01:%d\n ", a[0][1]);    uart_printf ("q02:%d\n", a[0][2]);    uart_printf ("q10:%d\n", a[1][0]);    uart_printf ("q11:%d\n", a[1][1]);        uart_printf ("q12:%d\n", a[1][2]);    #if 0//segmentation fault uart_printf ("x00:%d\n", x[0][0]);    uart_printf ("x01:%d\n", x[0][1]);    uart_printf ("x02:%d\n", x[0][2]);    uart_printf ("x10:%d\n", x[1][0]);    uart_printf ("x11:%d\n", x[1][1]);    uart_printf ("x12:%d\n", x[1][2]); #endif}int Main () {F1 ();} /*[email protected]:/work/dcc# gcc *.c;./a.outa00:0a01:1a02:2a10:10a11:11a12:12p00:0p01:1p02:2p10:10p11 : 11p12:12q00:0q01:1q02:2q10:10q11:11q12:12*/

　　

Two-dimensional array (the relationship between the array name and the address)

First define a two-dimensional array and a pointer to it p_array:

Char array[3][1000];

typedef char CHAR_ARRY2[3][1000]; typedef char_arry2* PCHAR_ARRY2; Pchar_arry2 P_array= &array;  

Decimal Absolute Address	Point to Element	Point to a one-dimensional array	Point to a one-dimensional array	Point to a one-dimensional array	Point to a two-dimensional array	Hex Address
872369208	ARRAY[0]	&ARRAY[0]	Array	P_ARRAY[0]	P_array	33ff4c38
872369209	Array[0]+1					33ff4c39
....
872370208		&array[0]+1	Array+1	P_array[0]+1		33ff5020
...
872372208					P_array+1	33ff57f0

array = = &array[0]

Pointers and arrays--pointers and two-dimensional arrays 2