Exercises in C Programming, Experiment, and Solution Questions. C programming is a general-purpose, essential computer programming language. The best way we learn anything is to practice and exercise questions. C is one of the most common programming languages of all time. It was developed by Dennis Ritchie at Bell Labs between 1969 and 1973 and was used to re-implement the Unix operating system. The majority of existing computer architectures and operating systems are available from a variety of manufacturers. Java 18.2% of Java users are using C, Java 18% of C.