how to pass in a string the value of a pointer to pointer

Question

For example I have a( char ** ptr) which includes the address of a string.

I want to put this string in a new string ptr_2 .

It is possible?

Yes, it's possible. There are many, many ways in which you can screw it up, though. — Kerrek SB
– Kerrek SB, Commented Dec 3, 2011 at 14:11

Sergey Kalinichenko · Accepted Answer · 2011-12-03 14:15:49Z

3

Think about it this way: when you put an asterisk in front of a pointer, you remove an asterisk from the type of the result:

ptr is char**
*ptr is char*
**ptr is char

String in C is char*, so you need to use *ptr.

answered Dec 3, 2011 at 14:15

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Comments

hugomg · Accepted Answer · 2011-12-03 14:10:15Z

1

strcpy(ptr_2, *ptr) should do the trick.

*ptr gets the address of the string you want to copy and from there you can manipulate it with any of the usual string handling functions.

answered Dec 3, 2011 at 14:10

hugomg

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or ptr_2 = strdup(*ptr); or simply ptr_2 = *ptr;

@harp: don't forget to upvote and accept helpful questions and answers :)