What is the output of: int a = 5, b = 2; printf("%d", a / b);

The correct answer is B: 2. Both a and b are integers, so integer division is performed: 5/2 = 2 (remainder discarded).

How many elements can be stored in a 2D array declared as int matrix[4][5]?

The correct answer is D: 20 elements. A 2D array with dimensions [4][5] contains 4 × 5 = 20 elements total.

In C, when you declare an array like int arr[10], what does the array name 'arr' represent?

The correct answer is A: A constant pointer to the first element of the array. Array names decay to pointers to their first element in most contexts. 'arr' is equivalent to &arr[0] and cannot be reassigned.

What is the output of the following code? #define MAX 5 int arr[MAX];

The correct answer is B: Array of size 5 is created. The preprocessor replaces MAX with 5, creating an array of size 5. This is a valid use of macro expansion.

What is the output of the following? struct S { int a:3; int b:3; int c:3; }; printf("%zu", sizeof(struct S));

The correct answer is D: Implementation dependent. Bit field packing is implementation-defined. Size depends on compiler's bit field allocation strategy.

All Subjects & Topics

Govt. Exams

Entrance Exams

Teacher Exams

Subjects

Quick Links

C Programming Mock Test

Topic-wise Tests

By Difficulty