Pointer to String and memory status

[93 Years Old]

Hello

I'm studying C and I have a question concerning the use of strings in C.

If I have the following code:

char *string;

string = "Hello";
string = "I have a question";

What's happens with the reserved memory for the string?
- In the first atribution (string = "Hello") we will reserve memory for this string
- In the second atribution what's happens with the memory? Is it the previous memory space for the previous string deleted and a new one is created?

Thanks for any help

[matsp]

The only memory "reserved" for string is the size of a pointer. When you do string = "Hello", then you set that pointer to point to a piece of memory that holds 'H', 'e', 'l', 'l', 'o', '\0'. Next when you set it to a different string, the pointer is set to a different memory location, where the new string is. The "Hello" string will still remain where it was in memory - you just have no way to find out were that is.

--
Mats

[93 Years Old]

ahh ok I understood.
Thanks for your quick and nice answer