Double Pointers

[Anurag7069]

I've been trying to read pointers for the last few days and while it is quite tough to understand but after practising a few programes it became a bit clear....
However the topic of double pointers is going above my head.... Even after doing several practicals, i've not been able to understand it not even it's initialisation as a result of which system has crashed 2-3 times.....The entire concept is totally confusing......

Can anyone please help me on this or provide me any link to study double pointers so that i can learn it from the basics.......

[toexii]

http://c-faq.com/~scs/cclass/int/sx8.html

http://www.cplusplus.com/forum/general/9508/

http://www.daniweb.com/software-development/c/threads/69966


And while you're at it take a look a this article:

http://www.cplusplus.com/articles/16vU7k9E/

[Anurag7069]

I'm still not clear with the practical use of double pointers.....
I mean is it advisable to use double pointers....
If yes, then why??????

[writetonsharma]

Although these days we have so many libraries that pointers and double pointers are not used very frequently. Like instead of pointer one can use std::string. Similarly for a double pointer a vector of string may be used.

But pointers are important and a good programmer should have a strong understanding of pointers. double pointers are used when you are doing something in double dimension like solving some matrix problem, reading a text file and doing some calculations and million other uses. In these scenarios where we dont know what will be the size of input, we have to use double pointers.