CLP – C Certified Professional Programmer Certification

C Certified Professional Programmer (CLP) is a professional certificate 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.

A test candidate should demonstrate sufficient knowledge of the following concepts:

Handling variable number of parameters (<stdarg.h>)

Low level IO (<unistd.h>)

Memory and strings (<string.h> et al.)

♦ Processes and threads

Floats and ints once again (<math.h>, <fenv.h>, <inttypes.h> et al.)

Network sockets –the absolute basics

Exam name:   CLP – C Certified Professional Programmer
Exam code:   CLP-12-01
Associated certifications:   CLA – C Programming Language Certified Associate
Pre-requisites:   CLA – C Programming Language Certified Associate
Exam version:   12-01 (Published)
Duration:   65 minutes (exam) + 10 minutes (NDA/Tutorial)
Number of questions:   55
Format:   Single-choice, Multiple-choice questions
Passing score:   70%
Full exam price:   USD 295 (see discount information)
Languages:   English

To learn more about exam objectives and study resources, locate a test centre that is near you, or schedule your exam, please click on the buttons below.

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Rescheduling and canceling

C++ candidates must reschedule and cancel exam appointments at least one full business day (24 hours) before the appointment via the Candidate website ( or the Call Centre (+44 161 855 7483). Appointments must be rescheduled within the authorised exam delivery period. All registrations with special requests must be rescheduled or canceled through the Call Centre.

Accommodation of disabilities

C++ Institute will endeavour to accommodate any special requirements. Candidates must submit their requests to C++ Institute (, who will then notify Pearson VUE by email. Special requests may include:

  • 25% time extension;
  • Adjustable font;
  • Adjustable contrast.

No automatic time extension is given to candidates who reside in a country where the first language is not English.

Retake policy

When a candidate fails an exam, he or she must wait 15 days before being allowed to re-sit that exam. There is no limit to the number of times a candidate may retake an exam. No retakes of a passed exam of the same exam version are allowed.

Each candidate who has paid the full exam price (USD 295), or has completed the CLP course in the self-study mode (used a 50% discount voucher to schedule the exam) in the C/C++ Education Platform, is eligible for one free retake of the CLP exam. A candidate who meets the above criteria and wants to receive a free voucher to re-sit a failed exam must fill out and submit the Re-take Voucher Request Form no later than 365 days after failing the exam as long as the exam version has not been retired.

The voucher entitling the candidate to a free retake of the exam will be sent to the candidate’s email address associated with their Pearson VUE account right after submitting the request. The voucher is valid for at least 45 days.


Need help starting your Pearson VUE web account for C++ Institute exams? Don’t know how to connect your Pearson VUE web account with your C++ Institute student account? Not sure how to schedule an exam? Check out our tutorials!

How to set up a Pearson VUE account

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