Consider the following C program: Figure from the original question paper Which of the following statements about the output are true?

(A) If the input is x = 5, y = 6, the output is R

(B) If the input is x = -1, y = 15, the output is V

(E) If the input is x = 0, y = 5, the output is U

(C) If the input is x = 0, y = 12, the output is U

(D) If the input is x = 1, y = 7, the output is R

May 2026 term · Programming in C · BSCS3005

Programming in C Quiz 1: 19 July 2026 (May 2026 term)

The IIT Madras BS Programming in C (Programming in C) Quiz 1 paper sat on 19 Jul 2026, in the May 2026 term: 17 questions for 50 marks in 120 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.

Questions: 17
Marks: 50
Duration: 120 min
MCQ: 9
Numerical: 5
MSQ: 3

Take as mock test Practise with answers

Updated 25 Sept 2026

Official paper: Programming in C 16 Jul 26 · No negative marking.

Question 1

+2 marksOne correct option

Which of the following best characterizes the C programming language?

A
High-level, object-oriented, interpreted
B
High-level, unstructured, compiled
C
Mid-level, structured, compiled
D
Low-level, procedural, interpreted

Show answer

Correct answer

C
Mid-level, structured, compiled

Question 1 on its own page

Question 2

+2 marksOne correct option

What is the decimal equivalent of the hexadecimal number 3D?

A
51
B
63
C
61
D
77

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Correct answer

C
61

Question 2 on its own page

Question 3

+2 marksOne correct option

What is the range of integer values that can be represented by an 8-bit signed integer using two's complement convention?

A
-127 to +127
B
-128 to +127
C
-255 to +255
D
0 to 255

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Correct answer

B
-128 to +127

Question 3 on its own page

Question 4

+2 marksOne correct option

What is the purpose of the Program Counter (PC) in a CPU?

A
It performs arithmetic and logic operations.
B
It holds the address of the next instruction to be executed.
C
It stores temporary data for quick access.
D
It coordinates the flow of data between the CPU and memory.

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Correct answer

B
It holds the address of the next instruction to be executed.

Question 4 on its own page

Question 5

+4 marksOne correct option

Consider the computations given below using the generalized memory model. M[0] ← x1. M[1] ← y2. M[2] ← M[0] – M[1]3. M[1] ← M[2] * M[1]4. M[0] ← M[2] * M[0]5. M[2] ← M[0] – M[1]6. M[3] ← M[2]7. What is the value of M[3] at the end of the execution?

A
(x - y) * (x - y - 1)
B
(x - y) * (2x - y)
C
(x - y) * (x - 2y)
D
(x - y) * (x - y)

Show answer

Correct answer

D
(x - y) * (x - y)

Question 5 on its own page

Question 6

+4 marksOne correct option

What will be the output of the following code?

A
011334
B
0134
C
012123234
D
0112334

Show answer

Correct answer

A
011334

Question 6 on its own page

Question 7

+4 marksOne correct option

What will be the output of the following code?

A
1 2 3 4 5 6 7 8 9
B
1 2 7 8
C
1 2 3 7 8
D
1 2 3 7 8 9

Show answer

Correct answer

B
1 2 7 8

Question 7 on its own page

Question 8

+3 marksOne correct option

Trace the computation of the following C program fragment:

What are the final values of a, b, and c?

A
a = 1, b = 18, c = 24
B
a = 7, b = 15, c = 21
C
a = 10, b = 18, c = 24
D
a = 8, b = 15, c = 22

Show answer

Correct answer

A
a = 1, b = 18, c = 24

Question 8 on its own page

Question 9

+3 marksOne correct option

Consider the following C code.

What will be the output?

A
5
B
12
C
9
D
10

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Correct answer

Question 9 on its own page

Question 10

+3 marksNumerical answer

Consider the nested ternary expression:

What is the value of b after execution?

Show answer

Correct answer: 20

Question 10 on its own page

Question 11

+3 marksNumerical answer

What will be the output of the following code?

Show answer

Correct answer: 43

Question 11 on its own page

Question 12

+2 marksNumerical answer

What is the value of the integer variable result after executing the following C statement?

Show answer

Correct answer: 14

Question 12 on its own page

Question 13

+3 marksOne or more correct options

Which of the following CANNOT be used as valid variable names in C?

Select all that apply.

A
total_marks
B
1st_score
C
_final_value
D
if
E
price$

Show answer

Correct answers

B
1st_score
D
if
E
price$

Question 13 on its own page

Question 14

+3 marksOne or more correct options

Which of the following statements about C's logical operators '&&' (AND) and '||' (OR) are correct, specifically regarding their short-circuit behavior?

Select all that apply.

A
The expression (A && B) always evaluates B if A is true.
B
The expression (A || B) always evaluates B if A is true.
C
If the first operand of '&&' is false, the second operand is not evaluated.
D
If the first operand of '||' is true, the second operand is not evaluated.

Show answer

Correct answers

A
The expression (A && B) always evaluates B if A is true.
C
If the first operand of '&&' is false, the second operand is not evaluated.
D
If the first operand of '||' is true, the second operand is not evaluated.

Question 14 on its own page

Question 15

+2 marksOne or more correct options

Consider the following C program:

Which of the following statements about the output are true?

Select all that apply.

A
If the input is x = 5, y = 6, the output is R
B
If the input is x = -1, y = 15, the output is V
C
If the input is x = 0, y = 12, the output is U
D
If the input is x = 1, y = 7, the output is R
E
If the input is x = 0, y = 5, the output is U

Show answer

Correct answers

A
If the input is x = 5, y = 6, the output is R
B
If the input is x = -1, y = 15, the output is V
E
If the input is x = 0, y = 5, the output is U

Question 15 on its own page

Question 16

+4 marksNumerical answer

Consider the following generalized computation:
Step 1: R0 ← M[0]
Step 2: R1 ← M[1]
Step 3: R3 ← R0 MOD 2
Step 4: IF R3 = 0 THEN GOTO Step 7, Otherwise GOTO Step 5
Step 5: R2 = R0 + R1
Step 6: GOTO Step 8
Step 7: R2 = R0 * R1
Step 8: M[2] ← R2
If M[0] = 5 and M[1] = 3, what is the value of M[2] at the end of the computation?

Show answer

Correct answer: 8

Question 16 on its own page

Question 17

+4 marksNumerical answer

Consider the following assembly program (anything after ; is a comment).

If initially n=6, what will be the final value stored in R2 at the end of the program?

Show answer

Correct answer: 21

Question 17 on its own page