Question

Possible Duplicate:
In C, what is the correct syntax for declaring pointers?

When I read C code, I see several ways to write a pointer,like

int *p;
char * s;
char * d = &c;
ll_model* model = new_ll_model(n, cc->term); 
double* avg_ll;

My questions are:

1. Are there any differences between them?

2. If there are, what are the differences? That is, does the position of white space and the * mean something?

3. Which way is the right way to write a pointer, so it is readable to myself and any other person who will read my code

Answer 1

Basically, there’s no difference between them.

But I prefer this method:

int *p;

Instead of:

int* p;

or

int * p;

The reason is that because if you want to declare a number of int * in the same line, it makes more sense to have the * next to the identifier instead of the type because that looks cleaner and less confusing. e.g.

int *p, *q, *r;

is better than:

int* p, *q, * r;

If you don’t like my reasons, make sure you stick to one of them and don’t vary the usage.