Shorts

Question 1

Pointers

Answer 1

Provides an alternate way to pass on data between functions
In C we pass a copy of the data when we pass data by value
Is nothing more than an address to a location where the memory lives

Question 2

HDD

Answer 2

hard disk drive

Question 3

SSD

Answer 3

solid-state drive

Question 4

pointer is a data item whose

Answer 4

value is a memory address

type describes the data located at that memory address

Question 5

pointer

Answer 5

can update variables

Question 6

NULL

Answer 6

if no value for the pointer set it to this

Question 7

How to create a pointer

Answer 7

extract the address of an already existing var
& address extraction operator
if x is the variable
then &x is a pointer who is valued at the address of x
&arr[i] is a pointer to double an array of doubles it uses the ith element

Question 8

dereferencing

Answer 8

inspect or modify the location of which it points

Question 9

pointer-to-char

Answer 9

*pc data lives inside pc

Question 10

*

Answer 10

dereferencing operator
knowing the address but not going there
That’s, where * comes in u, go there

Question 11

Dynamic Memory Allocation

Answer 11

every block that you malloc() must subsenquely be free() d
only memory that you malloc() musy be free()d
do not free() a memory block more then once

Question 12

Segmentation Fault

Answer 12

Trying to acces memory that is not meant to be touched