请问:C/C++语言如何将一个变量转换成指向一个二维数组元素的指针? 假设 void *p=new unsigned char[100][10]; 怎么用通过 指针 p 访问数组元素? ((unsigned char (*)[10]) p)[1][2] [ 本帖最后由 ATmega32 于 2008-1-18 12:38 编辑 ]
有一个A文件,里面存放如下内容,是查看各个端口下面的MAC地址。 MAC ADDR VLAN ID STATE PORT INDEX AGING TIME(s) 0023-ae66-7a3f 10 Learned Ethernet1/0/2 AGING --- 1 mac address(es) found on port Ethernet1/0/2 --- [WS-T402-A]display mac-address interface Ethernet1/0/3 MAC ADDR VLAN ID STATE PORT INDEX AGING ...
while (my [color=阿#0000ff]$hash_ref = $sth->fetchrow_hashref) { $int_ip_start = $hash_ref->{'int_ip_start'}; $int_ip_end = $hash_ref->{'int_ip_end'}; $province_id = $hash_ref->{'province_id'}; $province_name = $hash_ref->{'province_name'}; @t_province_ip = ($int_ip_start,$int_ip_end,$province_id,$province_name); $t...
有以下的数组, $array = array ( "num1" => array (12,35,26), "num2" => array (56,9,86), "num3" => array (46,61,21)) 如果按照第二列值升序排序,结果如下: $array=array( "num2" =>array(56,9,86), "num1" =>array(12,35,26), "num3" =>array(46,61,21) ) 如果按照第一列的降序排序,结果如下: $array=array( "num2" =>array(56,9,86), "num3" ...
import java.util.*; public class Main { public static void main(String[] args) { String[][] arr = {{"B","啊","20%"}, {"C","中","12%"}, {"A","我","55%"}} ; //缺省(按0列升序) Arrays.sort(arr, new TwoDimArrayComparator()); printArray(arr); //按0列降序 Arrays.sort(arr, new TwoDimArrayComparator(0,-1)); printArray(arr); //按1列升序 Arrays.sort(arr, new TwoDimArrayComparator(1)); ...
main(){ char arr[8][128]; func(arr); } func(char p[8][128]){ strcpy(p[0], "any"); } 我这时传递的arr是指针么? func函数的栈上有没有创建一个新的char[8][128]?