In this chapter, you have seen the various C++ standard library classes that support strings. You have seen how to read strings from streams, how to write strings to streams, how to convert between numbers and strings, and how to manipulate strings using regular expressions. When you write code, you will inevitably spend time running your code to check if it works according to your specifications. This will involve providing code that checks the results of your algorithms, code that logs intermediate code to a debugging device, and, of course, running the code under a debugger. The next chapter is all about debugging code!