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education/software development/ECE1400/Chapter 17 Exercises.md
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@ -26,6 +26,16 @@ struct {
> Which of the following statements are legal? > Which of the following statements are legal?
(a) `p->b = ' ';` (a) `p->b = ' ';`
(b) `p->e[3] = 10;` (b) `p->e[3] = 10;` - **Legal**
(c) `(*p).d.a = '*';` (c) `(*p).d.a = '*';` - **Legal**
(d) `p->d->c = 20;` (d) `p->d->c = 20;`
---
> **7.** The following loop is supposed to delete all nodes from a linked list and release the memory that they occupy. Unfortunately, the loop is incorrect. Explain what's wrong with it and show how to fix the bug.
```c
for (p = first; p != NULL; p = p->next)
free(p);
```
The above loop won't function because it deallocates an entry, resulting