C Primer Plus, Fourth Edition

Section IX—Differences Between C and C++

For the most part, C++ is a superset of C, meaning that a valid C program is also a valid C++ program. The main differences between C++ and C are the many additional features that C++ supports. However, there are a few areas in which the C++ rules are slightly different from the C equivalents. These are the differences that might cause a C program to work a little differently, or perhaps, not at all, if you compile it as a C++ program. And they are the differences this appendix discusses. If you compile your C programs using a compiler that does just C++ and not C, you need to know about these differences. Although they affect very few of the examples in this book, the differences can cause some instances ...