C Primer Plus, Fourth Edition

Creating a Friendlier User Interface

Most of us have on occasion written programs that are awkward to use. Fortunately, C gives you the tools to make input a smoother, more pleasant process. Unfortunately, learning these tools could, at first, lead to new problems. The goal in this section is to guide you through some of these problems to a friendlier user interface, one that eases interactive data entry and smoothes over the effects of faulty input.

Working with Buffered Input

Buffered input is often a convenience to the user, providing an opportunity to edit input before sending it on to a program, but it can be bothersome to the programmer when character input is used. The problem, as you've seen in some earlier examples, is that buffered ...