C Programming Quiz 2026 - Test Your C Language Knowledge

C Programming Quiz 2026 - Test Your C Language Knowledge

Take this free C programming quiz for beginners and programmers. Test your knowledge of C basics, variables, data types, operators, loops, arrays, pointers, functions, and more.

1. Who developed the C programming language?

Dennis Ritchie James Gosling Bjarne Stroustrup

2. Which header file is used for printf()?

math.h stdio.h string.h

3. Which symbol is used for comments in C?

// ## %%

4. Which data type stores characters?

int char float

5. Array indexing in C starts from?

0 1 -1

6. Which operator is used for address of a variable?

& * %

7. Which loop executes at least once?

for while do-while

8. Which keyword returns a value from function?

break return continue

9. Which is not a valid C data type?

integer int float

10. C language is a ______ language.

Procedural Markup Database

11. Which function is used to find string length?

strlen() strcpy() strcmp()

12. Which symbol represents pointer?

* & #

13. Which function allocates memory dynamically?

malloc() printf() scanf()

14. Which keyword defines a constant?

const fixed constant

15. Size of char is normally?

1 byte 4 bytes 8 bytes