Problem Solving Through Programming In C Nptel Week 1 Assignment Answers
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Problem Solving Through Programming In C Week 1 Answers (July-Dec 2025)
Question 1. Which of the following is a valid C variable name?
a) 2variable
b) variable_2
c) variable-2
d) variable.2
Question 2. CPU comprises of
a) ALU- Arithmetic and Logic Unit
b) Registers
c) Control unit
d) All of the above
Question 3. Choose the correct statements from the following
i) In high-level language, testing and debugging a program is difficult than assembly language.
ii) C programs are highly portable on any type of operating system platform.
iii) A flowchart is a visual representation of the sequence of steps for solving a problem.
iv) The role of a compiler is to translate source program statements to decimal codes.
a) (i) and (ii)
b) (ii) and (iii)
c) (i), (ii), and (iii)
d) (ii), (iii), and (iv)
Question 4. Which of the following functions is used to read a single character from the keyboard in C?
a) printf()
b) scanf()
c) getchar()
d) puts()
Question 5. What is the purpose of the #include directive in a C program?
a) To include a library file.
b) To define a library file.
c) To define a constant.
d) To start the main function.
Question 6. An interpreter reads the source code of a program
a) one line at a time
b) two line at a time
c) complete program in one stroke
d) None of these
Question 7. In C programming, what is the best way to comment multiple lines?
a) Using // at the beginning of each line.
b) Enclosing the comments between /* and */.
c) Using # at the beginning of each line.
d) Enclosing the comments between { and }.
Question 8. Which of the following statements is true regarding variable declaration in C?
a) Variables can be declared at any point in the program.
b) Variables must be declared before they are used.
c) Variables are automatically initialized to zero.
d) Variable names can start with a digit.
Question 9. What will be the output of the flowchart given below?
START → Read Numbers a=3, b=2 → b=a*b+b/5 → print b → STOP
a) 4
b) 8
c) 16
d) 20
Question 10. The print values of “a” and “b” of the flowchart below are:
START → Declare variables and assign values a=4 & b=6 → a=a+b → b=a-b → a=a-b → print values of a & b → STOP
a) a=4, b=6
b) a=6, b=4
c) a=10, b=2
d) a=2, b=10
Problem Solving Through Programming In C Week 1 Answers (Jan-Apr 2025)
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Que. 1) Set of instructions to be provided to an electronic machine to perform a task is called
A) Programming
B) Processing
C) Computing
D) Compiling
Que. 2) Compiler helps in the translation from
A) Integer to binary
B) High-level program to binary digits
C) High-level language to machine level language
D) Pseudo code to computer program
Que. 3) The ALU unit of computer
A) Can perform logical operation only
B) Can perform arithmetic operation only
C) Can perform both arithmetic and logical operations
D) None of the above
Que. 4) What type of device is a computer printer?
A) Memory
B) Output
C) Storage
D) Input
Que. 5) Algorithm is –
A) A process or set of rules to be followed in calculations or other problem-solving operations, especially by a human
B) A process or set of rules to be followed to solve numerical problems only
C) A process or set of rules to be followed in calculations or other problem-solving operations, especially by a computer
D) A process or set of rules to be followed to solve logical problems only
Que. 6) When we write X=10 and Y=X, which of the following memory assignment is correct?
A) X and Y will have the same location and 10 will be stored
B) X and Y will have two distinct locations and 10 will be stored in both
C) X and Y will have the same location, and only X will contain value 10
D) X and Y will have two distinct locations, and only X will contain value 10
Que. 7) The input N from the user is 6. The output of the following algorithm is
A) 21
B) 720
C) 1
D) 2
Que. 8) What will be the output of the algorithm given below?
A) 51
B) 52
C) 50
D) Compilation error
Que. 9) The following algorithm is used to find a number X is even or odd. What will be the content of the empty box?
A) X%10=0?
B) X/10=0?
C) X/2=0?
D) X%2=0?
Que. 10) X is an integer (X=2648). The print value of Y of the flowchart below is
A) 20
B) 22664488
C) 8462
D) 0
Problem Solving Through Programming In C Week 1 Answers (July-Dec 2024)
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These are Problem Solving Through Programming In C Week 1 Answers
Q1. Which of the following is a valid C variable name?
a) 2variable
b) variable_2
c) variable-2
d) variable.2
Q2.Which of the following functions is used to read a single character from the keyboard in C?
a) printf()
b) scanf()
c) getchar()
d) puts()
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These are Problem Solving Through Programming In C Week 1 Answers
Q3.What is the purpose of the #include directive in a C program?
a) To include a library file.
b) To include a library file.
c) To define a constant.
d) To start the main function
Answer: b) To include a library file.
Q4.Which of the following correctly describes the purpose of a compiler in C?
a) To execute the program line by line.
b) To convert source code into machine code.
c) To provide a runtime environment for program execution.
d) To interpret and run the program interactively.
Answer:b) To convert source code into machine code.
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These are Problem Solving Through Programming In C Week 1 Answers
Q5.Which of the following is true about the execution nature of C programs?
a) C programs are executed in an event-based manner.
b) C programs are executed concurrently.
c) C programs are executed in a multi-threaded manner.
d) C programs are executed sequentially.
Answer:d) C programs are executed sequentially.
Q6.In C programming, what is the best way to comment multiple lines?
a) Using // at the beginning of each line.
b) Enclosing the comments between /* and */.
c) Using # at the beginning of each line.
d) Enclosing the comments between { and }.
Answer: b) Enclosing the comments between /* and */.
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These are Problem Solving Through Programming In C Week 1 Answers
Q7.Which of the following is a characteristic of the ASCII standard?
a) It supports encoding for all the world’s languages.
b) It uses 16-bit encoding for characters.
c) It is a 7-bit character encoding standard.
d) None of the above.
Answer: c) It is a 7-bit character encoding standard.
Q8.Which of the following statements is true regarding variable declaration in C?
a) Variables can be declared at any point in the program.
b) Variables must be declared before they are used.
c) Variables are automatically initialized to zero.
d) Variable names can start with a digit.
Answer: b) Variables must be declared before they are used.
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These are Problem Solving Through Programming In C Week 1 Answers
Q9. What will be the output of the flowchart given below?
a) 4
b) 8
c) 16
d) 20
Answer: c) 16
Q10. The output of the following algorithm is
a) 21
b) 28
c) 30
d) 40
Answer: b) 28
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These are Problem Solving Through Programming In C Week 1 Answers
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