CLP – C Certified Professional Programmer is a professional high-stakes certification that measures your ability to accomplish coding and design tasks related to advanced topics of the C programming language, as well as advanced programming techniques, including the library functions and the usage of the preprocessor.
CLP – C Certified Professional Programmer certification validates that you demonstrate sufficient skills and knowledge related to the such topics as handling variable number of parameters (<stdarg.h>), low-level I/O operations (<unistd.h>), memory and strings operations (<string.h> et al.), processes and threads, advanced use of floats and ints (<math.h>, <fenv.h>, <inttypes.h> et al.), and network sockets.
The CLP certification shows that you are passionate about C and related technologies. It proves that you take your career development seriously and it lets you stand out with a globally-recognized credential.
More information: C++ Institute CLP Certification Page
CLA – C Certified Associate Programmer Certification