C Programming Quiz | Orygyns Coding Platform

Level 2: Control Flow (Medium)

4. What does the modulus operator % do in C?

Calculates the percentage of a number
Returns the remainder of a division
Performs division and returns a float

5. In an if-else statement, when does the else block execute?

Only when the 'if' condition is true
When the 'if' condition evaluates to false
It executes every time

6. Which loop is generally considered best when the exact number of iterations is known beforehand?

while loop
do-while loop
for loop

Level 3: Core Memory & Structures (Important)

7. What is the primary purpose of writing custom functions in C?

To execute reusable blocks of code and keep the program modular
To automatically allocate system RAM
To make the program run infinitely

8. Given the array int arr[3] = {10, 20, 30};, what is the value stored at arr[0]?

20
30
10

9. Which special character is automatically used to terminate a string array in C?

\n
\0 (Null character)
EOF

Level 4: Advanced Memory (Pointers)

10. What is a pointer in C?

A variable that stores the mathematical square of a number
A variable that stores the physical memory address of another variable
A keyword used to point to the end of a file

11. Which operator is used to get the memory address of a variable?

* (Asterisk)
& (Ampersand)
% (Modulus)

12. What does "dereferencing" a pointer mean?

Accessing the actual value stored at the memory address the pointer holds
Deleting the pointer from memory
Resetting the pointer to NULL

Level 5: Structs & Problem Solving

13. In "Call by Reference", what exactly is passed to the function?

A copy of the variable's value
The memory address of the variable
The name of the variable as a string

14. What is the primary purpose of a struct in C?

To group different variables of varying data types under a single unified name
To create a loop that structures memory
To perform complex math equations

15. What is the definition of an Algorithm in problem solving?

Step-by-step written logical instructions used to solve a problem before coding
A type of database used in C
A visual diagram of memory allocation

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