编译事业的第一线预留空间记忆整数.二线告诉编译预留空间储存了教鞭.指针是一个存放地点的地址.要提醒你的第三行的scanf报表.

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让我们看看以下声明:

int var_x;
int* ptrX;
var_x = 6;
ptrX = &var_x;
*ptrX = 12;
printf("value of x : %d", var_x);

编译事业的第一线预留空间记忆整数.二线告诉编译预留空间储存了教鞭.

指针是一个存放地点的地址.要提醒你的第三行的scanf报表.地址"与"告诉编译器去操作它存放地点var_x,然后把地址给ptrx贮存地点.

*星号门前的一个变数告诉编译到钝感的教鞭,去记忆.那么你可以指派给变量存放在该地点.你可以参考变数,其数据接入通过教鞭.让我们看看一个例子说明:

* 使用说明教鞭 */
#include <stdio.h>

int main()
{

int index, *pt1, *pt2;

index = 39; /* 任何数值 */
pt1 = &index; /*地址指数 */
pt2 = pt1;

printf("The value is %d %d %d\n", index, *pt1, *pt2);

*pt1 = 13; /*这个变化的价值指数 */

printf("The value is %d %d %d\n", index, *pt1, *pt2);

return 0;
}

产量将展示节目如下:

The value is 39 39 39
The value is 13 13 13

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi
Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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