Simulating Classes in C

There is no concept of classes in C language, therefore there is no way to define classes. C is a procedural programming language, which organizes code based on functions and data structures rather than classes and objects. If object-oriented programming is needed, structures can be used to simulate the concept of classes, and then functions can be used to manipulate these structures to implement methods of classes. However, this approach is not true object-oriented programming, just a simulation.