How does this work

Question

https://code.sololearn.com/c8CWlFpUVgN7/?ref=app

Answer 1

Offset calculation
0 1 2 3 4 5 6 7 8 9 10 11
H e l l o w o r l d \0
Try to change 1 with another number, you'll understand how this works 👍
P.S. The '\0' is the null character used as string terminator in C-string a.k.a. char array.

Answer 2

Vatsav substring works like this
Take a string and initailize it with "Hello"
If you write 1 it will print the while string except 1

Answer 3

I think so the one is doing the work of substring function

Answer 4

This is pointer arithmetic.
1 + pointer to a character (in your example, this pointer points to character 'H'.
1 means go to the next element.

Answer 5

Ok got it thanks for helping

Answer 6

How does it actually work Atul

Answer 7

Thirt13n