How to reduce a bigger string in smaller string in C++? Probably by hashing?

Question

I want to compress a bigger string into a smaller string in C++. What are the different ways to do this in C++? The requirement is that output should also be a string.

Answer 1

Well, if you don't need to uncompress it later:

string s = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
s = "";

Edit: Sounds like you want a hash function - there are a zillion out there, depending on your requirements. Google is your friend.