Strings and pointers

[Niels_M]

Hi guys

Please take a look at the two lines of code

char asd[][4]={"qwe", "rty"};

and

char *asd[]={"qwe", "rty"};

When using the first line, I am able to change the values of asd[x][y], while I am not allowed to change the values of the array in the second example. Why is that?

Best,
Niles.

[quzah]

The second one is an array of pointers, which point to string literals. The first is a 2D array of characters, initialized with those values.

Question 6.2


Quzah.

[CSaw]

When a pointer points to a string literal, the string is immutable ( cannot be overwritten ). However when an array is set up with the string literal, it's placed on mutable memory on the stack.