String Window in hacker block

#1

https://ide.codingblocks.com/#/s/30951
https://hack.codingblocks.com/contests/c/452/1665

#2

The question says to find a substring that contains all the characters of B, but you assumed that the order of characters in A is same as that in B.
For eg:

INPUT:
abcde
edc
OUTPUT:
No string
EXPECTED OUTPUT:
cde

#3

Try correcting it by using count of each character of B and little of hashing
OR
Use two pointer method and keep a pointer at start and move the other pointer forward.

Here is my solution using first approach:
https://ide.codingblocks.com/#/s/31470

#4

what is wrong in my code ? plz help