why are we giving address of "i" in "for(auto &i : q)" ??

but the parameter of atoi is string( int atoi(const char *str) ).so why are we giving the address of elements as a parameter?

exactly i also having the same issue. in my visual studio code it is showing false but here it is showing true. idk why

what will be the answer of solution("ails", "fails") and solution("", "baaaabb")?
plz anyone tell

i didn't get it. plz tell me what do u mean by that.

thank you very much for solving my doubt. now i get it why i was having this error.

what parameter is this szout?
arrin is for given array, szin is for size of array but what is this szout?
plz anyone tell

why are we using "size_t i" in for loop? can't we use "int i"?

what does "unsigned int" mean?

okkk i get it. thank you

whats the advantages of using size_t? can't we just use int or float as a datatype? plz someone tell.

I have 3 doubts...

1. what is this <stddef.h> and <stdbool.h>and why are we using it here?
2. why are we not using <stdio.h> here?
3. What does size_t means?

plz someone help me...