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Certification exam

Certified in C.

Already know C? Skip the course. Pass the exam and get a verified W3Schools certificate the same day.

$953 attempts, certificate and course included

All 45+ exams · $499

14-day money-back guarantee  ·  Instant access  ·  Take it when you're ready

  • OnlineFrom anywhere, any time
  • 3 attemptsNo extra cost
  • Course includedBrush up before you take it
  • ForeverCertificates never expire

Our learners work at

  • Oracle
  • Amazon
  • Microsoft
  • Shopify

How it works

Buy it. Take it. Share it.

No scheduling, no proctor, no waiting for results.

  1. Buy the exam

    Instant access in your W3Schools account. No scheduling.

  2. Take it when you're ready

    Online, multiple choice. 3 attempts included.

  3. Get certified

    Pass and your certificate is issued the same day.

What the exam tests

The C skills you need to pass.

Multiple choice questions across the whole of C, from the basics to real-world use.

  • Understand what the C programming language is and how to write code.
  • Learn C syntax and structure.
  • Use variables and data types to store and manage data.
  • Understand and use printf() and scanf() for input and output.
  • Write simple decision-making code with if, else, and switch.
  • Create loops using for, while, and do...while.
  • Learn about functions to create reusable code.
  • Work with arrays to store multiple values.
  • Understand pointers and how they are used in C.
  • Learn file handling for reading and writing files.
  • Write and run C programs.
Not sure you're ready?

The full C course, 33 modules, is included with the exam. Brush up first, then take it.

See the course

Roles that ask for this

  • C Developer
  • Embedded Systems Engineer
  • Firmware Engineer
  • Systems Programmer
  • Software Engineer
  • IoT Developer
  • Operating Systems Developer
  • Hardware Engineer
  • Robotics Engineer
  • Game Engine Developer
  • Network Programmer
  • Automotive Software Engineer

Levels

Your score sets your level.

Pass at any level and the certificate is yours. The level is printed on it.

  • 40%Intermediate

    You know the fundamentals and can use them in practice.

  • 75%Advanced

    You handle most real-world tasks without looking things up.

  • 90%Professional

    Expert level. The highest mark on a W3Schools certificate.

Your certificate

Become a Certified C Developer.

A credential from the site that has taught the web since 1999.

  1. Issued in your name

    With your level and the date you passed.

  2. Verifiable

    Employers check it in seconds by link or QR code.

  3. Yours forever

    No renewals, no expiry. Add it to LinkedIn and your CV.

Certified C Developer

Pricing

One exam, or all of them.

This exam

C exam

$95one-time

  • 3 attempts, instant results
  • C certificate
  • The full C course included
  • Lifetime access
14-day money-back guarantee, as long as no exam attempt is used.

Best value

Full Access

$499one-time

  • All 33 courses
  • 45+ certification exams and certificates
  • W3Schools Hero for life
  • Lifetime access
Get Full Access 14-day money-back guarantee, as long as no exam attempt is used.

Questions? Answers.

How does the exam work?

It is online and multiple choice. You start it whenever you want from your W3Schools account. You get the result the moment you finish, and the certificate right after you pass.

What if I fail?

You have 3 attempts. Take your time between them and retry when you're ready.

Is there a time limit?

Each attempt has a time limit, but there is no deadline for starting it. Buy now, take it when you feel ready.

Does the certificate expire?

No. It never expires. It is issued in your name and employers can verify it with a unique link or QR code.

Do you have a money-back guarantee?

Yes. 14 days from purchase, as long as no exam attempt is used. Our refund policy.

Is the course included?

Yes. Buying the exam also gives you the full course, so you can brush up before you take it. And buying the course includes the exam. Same content, pick the page that fits you.