[C++] Why the code run error if un-mark the line 11?

Question

Code as below:
https://code.sololearn.com/chs3vFdztces/#cpp

the line 11 is same as line 16, why it won't error?
and why run error if un-mark the line 11?
Could someone explain to me?

Answer 1

Hey that should be endl and not end.

cout<<*p++<<endl;
Line 11.

Answer 2

wow thanks a lot