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标题:[求助]c++ syntax about 2d array
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aipb2007
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以下是引用HJin在2007-6-22 23:38:58的发言:
野比's way

[CODE]int* b=&a[0][0]; //a pointer to the start of the array
int** c=&b; //a pointer points to the pointer which points to the array... wow.....tongue twister... (^^!)
//now you can use the c pointer as the parameter of f() instead...[/CODE]

on my system gives access violation error. b points to the start of the 2d array, c is just the address of the b variable, so that

[CODE]c[2][2] = 1;[/CODE]
fails.




I think you misunderstand.
int *p[n];
p[n] = &a[0][0]
……

then
int **ptr = p;

try this.


Fight  to win  or  die...
2007-06-22 23:46
野比
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以下是引用HJin在2007-6-22 23:38:58的发言:
野比's way

[CODE]int* b=&a[0][0]; //a pointer to the start of the array
int** c=&b; //a pointer points to the pointer which points to the array... wow.....tongue twister... (^^!)
//now you can use the c pointer as the parameter of f() instead...[/CODE]

on my system gives access violation error. b points to the start of the 2d array, c is just the address of the b variable, so that

[CODE]c[2][2] = 1;[/CODE]
fails.

Hey budy, I posted a new method on the 7th floor.. SEE ?

Take a look..


女侠,约吗?
2007-06-24 23:10
HJin
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thanks 野比 and aipb2007, got your guys' idea.

I am working on a system which has no Chinese input. Please don\'t blame me for typing English.
2007-06-25 01:54
野比
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Not at all...

女侠,约吗?
2007-06-25 19:51
快速回复:[求助]c++ syntax about 2d array
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