FIX : this should be after line 31 btw. Anyways nice code!!!! helped me

https://github.com/agnosticdev/Tutorials/blob/08f33addaac8f9815402ddb7e2a0ac8e272ed319/substring.cpp#L28
`Fix:
  	  **if (e == strlen(csubstring)) {
  	  	return indx;
              }
  } else {
  	 e = 0;
  }
  return -1;
}**`
