CPP - Pointers PDF

#1

Addition of an address by a constant integer value i.e. ptr +5 means address of cell which is 5 * sizeof(*ptr) away from ptr.
Please explain this line.

#2

Hey @yajurkhurana
Bassically assume
int*arr =new int[10];
Here assume pointer to an array
than
arr+1 is pointing to 1st element
arr+2 is pointing to 2nd element and so on

Simillarly now assume its not an array just an integer even then it will go that many bytes ahead

So intarr=&b;
Now if arr is pointing at X
then arr+1 points at X+4 //4 is size of int
arr+2 points at X+8 //24
and so on

#3

I didn’t get this part of the answer you gave me.
Can you please explain it again?

#4

Basically if
arr is pointer of Y type and pointing to X address

then arr+i will point to address X+sizeof(Y)*i

So
if its an integer pointer then sizeof(int)=4
if char then sizeof(char)=1
and so on

So rest is just simple mathematics

Check this : https://ide.codingblocks.com/s/378360

#5

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