Many common file types are actually in text form even though it might not be immediately obvious. For example, JSON files, XML files, C source code, C++ source, .H header files, .PAS Pascal program files, and SQL Scripts are all types of 'plain' text file. Since the first version of C was released, C and C++ have had a lot of functions to read and write on these text files but you had to be quite careful because it wasn't difficult to make mistakes which could have some unintended side effects or errors. Today, we have more safer and modern methods to read and write these text "reading in files c++". Let's see how we can do this.