The IIT Madras BS Programming in C (Programming in C) End Term paper sat on 31 Aug 2025, in the May 2025 term, set QDB1: 24 questions for 100 marks in 180 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.
Pre-increment changes the value after the expression is evaluated, while post- increment changes it before the expression is evaluated.
Pre-increment changes the value before the expression is evaluated, while post-increment changes it after the expression is evaluated.
Pre-increment is used with integers, while post-increment is used with floating-point numbers.
Pre- and Post-increment are identical in operation. They are two ways of writing the same statement.
Correct answer
Pre-increment changes the value before the expression is evaluated, while post-increment changes it after the expression is evaluated.
Correct answer
When a recursive function is called, how does the call stack (or program stack) manage the function calls?
Each new recursive call overwrites the previous function call on the stack.
Each new recursive call adds a new stack frame to the top of the stack for its local variables and parameters.
The call stack is not used for recursive functions; a separate data structure is used.
The recursive calls are stored in a queue, waiting to be processed in order.
Correct answer
Each new recursive call adds a new stack frame to the top of the stack for its local variables and parameters.
Correct answer
Correct answer
Correct answer
Correct answer
10
20
30
40
Correct answer
20
Correct answer
Correct answer
A special data type is declared where multiple members share the same memory location. The size of an instance of this type is equal to the size of its largest member. What kind of data type is this?
Correct answer
Correct answer
In C programming, which memory region is primarily used for storing local variables of functions and function call information?
Heap memory
Stack memory
Static memory
Code segment
Correct answer
Stack memory
"New Content" is appended to the end, resulting in "Hello WorldNew Content".
The file is cleared, and only "New Content" is written.
The code will fail to open the file because it already exists.
"New Content" is inserted at the beginning, pushing "Hello World" to the end.
Correct answer
The file is cleared, and only "New Content" is written.
Correct answer
What is the primary purpose of the C preprocessor?
To execute the program's logic before the main function.
To convert the source code into machine language.
To process directives and modify the source code before compilation.
To manage dynamic memory allocation during runtime.
Correct answer
To process directives and modify the source code before compilation.
25
23
17
15
Correct answer
15
7
104
4
5
Correct answer
7
2 4 6 8
2 4 6 8 10
Infinite loop
2 4 6 8 10 12
Correct answer
2 4 6 8
0501
150
501
1050
Correct answer
0501
Correct answer: 4
Correct answer: 20
Correct answer: 26
Correct answer: 7
