2. Pointers to Structures
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 Structures are copied element wise. |
| For large structures, it is more efficient to pass pointers. |
void foo(struct point ∗pp);
struct point pt; foo(&pt)
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| Members can be accesses from structure pointers using ‘->’ operator. |
struct point p = {10,20};
struct point ∗pp = &p ;
pp−>x = 10; /∗ changes p.x ∗/
int y = pp−>y; /∗ same as y=p.y ∗/
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| Other ways to access structure members? Why is the () required? |
struct point p = {10,20};
struct point ∗pp = &p ;
(∗pp).x = 10; /∗ changes p.x ∗/
int y = (∗pp).y; /∗ same as y=p.y ∗/
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