In the expression: int arr[5]; int *p = arr; What does p + 2 represent?

The correct answer is B: Address of arr[2]. Pointer arithmetic scales by data type size. p + 2 moves 2 * sizeof(int) bytes forward, pointing to arr[2].

What is the correct syntax to define a macro with arguments in C?

The correct answer is A: #define MAX(a, b) ((a) > (b) ? (a) : (b)). The correct syntax uses #define followed by macro name and parameters, with the replacement text in parentheses.

Consider a 3D array: int arr[2][3][4]. How many elements total?

The correct answer is B: 24 elements. Total elements = 2 × 3 × 4 = 24 elements in the 3D array.

How many bytes are allocated by: int arr[10][20];?

The correct answer is C: 800 bytes. 10 rows × 20 columns × 4 bytes per int = 800 bytes (assuming 4-byte integer).

Given: struct Node { int data; struct Node *next; }; This represents which data structure concept?

The correct answer is B: Singly Linked List node. A self-referential structure with a single pointer member is the fundamental building block of a singly linked list.

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C Programming
Control Flow

C language from basics to advanced placement prep

12 Q 10 Topics Take Mock Test

Difficulty: All Easy Medium Hard 11–12 of 12

Topics in C Programming

All Basics & Syntax 86 Data Types & Variables 97 Control Flow 100 Functions 99 Arrays & Strings 100 Pointers 99 Structures & Unions 100 File Handling 100 Dynamic Memory 98 Preprocessor 99

Q.11 Hard Control Flow

What is the output of this complex nested control flow?
int x = 1, y = 2;
if (x < y) {
x++; y--;
if (x == y)
printf("Equal");
else
printf("NotEqual");
}

A Equal

B NotEqual

C No output

D Compilation error

Correct Answer: A. Equal

EXPLANATION

x=1, y=2. Since 1 < 2, x becomes 2 and y becomes 1. Now x != y, but after operations x=2, y=1. Wait: x++ makes x=2, y-- makes y=1. So x==y is false, printing 'NotEqual'. Rechecking: 1 < 2 is true, so enter if. x becomes 2, y becomes 1. 2 == 1 is false, so else executes, printing 'NotEqual'.

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Q.12 Hard Control Flow

What is the output of this program?
for (int i = 1; i

A 1 2\n 2 4\n 3 6

B 12 24 36

C 123456

D Error

Correct Answer: A. 1 2\n 2 4\n 3 6

EXPLANATION

Nested loops: outer i=1,2,3; inner j=1,2. Prints products: 1*1=1, 1*2=2 (newline), 2*1=2, 2*2=4 (newline), etc.

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Control Flow