Quiz on basic c

📝 C Language Mock Test (30 Marks)

1. Who developed the C programming language?

Dennis Ritchie James Gosling Bjarne Stroustrup Charles Babbage

2. Which year was C developed at Bell Labs?

1969–1972 1978 1989 1999

3. Which function is the entry point of every C program?

main() start() init() begin()

4. Which symbol is used for single-line comments in C?

// /* */ # --

5. Which data type is used to store decimal values?

float int char void

6. In C, which keyword defines a constant variable?

const constant define static

7. Which format specifier is used for integers?

%d %c %f %s

8. Which of these is NOT a keyword in C?

string int float return

9. What is the output of printf("Hello");?

Hello Hello; "Hello" Error

10. Which header file is required for printf()?

stdio.h conio.h math.h string.h

11. Which operator is used to assign a value in C?

= == := =>

12. Which operator is used for "AND" in C?

&& & || !

13. Which operator increases a value by 1?

++ -- += =+

14. Which operator checks equality in C?

== = != ===

15. What is sizeof(int) usually on 32-bit systems?

4 bytes 2 bytes 8 bytes 1 byte

16. Which function reads a character from user input?

getchar() scanf() printf() putchar()

17. What does return 0; in main() mean?

Program executed successfully Error occurred Program stopped abnormally Nothing

18. Which operator is used to access array elements?

[] {} () &

19. Which header file supports mathematical functions like sqrt()?

math.h stdio.h string.h conio.h

20. Which operator is used for conditional execution in C?

? : if switch goto