Introduction to C Programming

2. C is often referred to as a "middle-level" language because it combines elements of:

A) High-level language and assembly language
B) High-level language and low-level language
C) Assembly language and machine language
D) High-level language and scripting language

Correct Answer: A) High-level language and assembly language

3. Which of the following is NOT a feature of the C programming language?

A) Portability
B) Complex syntax
C) Fast and efficient
D) Structure-oriented programming

Correct Answer: B) Complex syntax

4. In C programming, which file type contains the source code of the program?

A) Header file
B) Object file
C) Source file
D) Executable file

Correct Answer: C) Source file

5. What is the role of a header file in C programming?

A) Contains the final executable code
B) Contains macro definitions and function declarations
C) Contains the compiled machine code
D) Used for linking the program to the operating system

Correct Answer: B) Contains macro definitions and function declarations

6. Which file extension is used for an object file in C programming?

A) .c
B) .h
C) .o
D) .exe

Correct Answer: C) .o

7. What does an executable file in C programming represent?

A) The source code before compilation
B) The linked and compiled binary code
C) The header information
D) The object code in a relocatable format

Correct Answer: B) The linked and compiled binary code

8. Which step comes immediately after writing a C program in a text editor?

A) Execution
B) Linking
C) Compilation
D) Debugging

Correct Answer: C) Compilation

9. What is the purpose of flowcharts in programming?

A) To compile code into machine language
B) To provide a pictorial representation of algorithms
C) To debug and optimize code
D) To execute the final program

Correct Answer: B) To provide a pictorial representation of algorithms

10. What is NOT one of the essential features of an algorithm?

A) Definiteness
B) Effectiveness
C) Complexity
D) Finiteness

Correct Answer: C) Complexity

11. Which year was the first version of C released?

A) 1969
B) 1972
C) 1978
D) 1983

Correct Answer: A) 1969

12. What was the name of the first book published on C programming in 1978?

A) "The C Programming Language"
B) "Introduction to C Programming"
C) "C for Beginners"
D) "Programming with C"

Correct Answer: A) "The C Programming Language"

13. Which organization standardized C in 1983?

A) ISO
B) ANSI
C) IEEE
D) W3C

Correct Answer: B) ANSI

14. In which year were new features like type checking and memory management included in the ISO C standard?

A) 1978
B) 1983
C) 1999
D) 2011

Correct Answer: C) 1999

15. What is the main advantage of C being a "platform-independent" language?

A) It does not require any compilation
B) It can run on any hardware and operating system
C) It is exclusively used for system programming
D) It does not need any libraries

Correct Answer: B) It can run on any hardware and operating system

16. What is the purpose of the documentation section in a C program?

A) To execute the program
B) To include comments and descriptions about the program
C) To declare variables
D) To perform input/output operations

Correct Answer: B) To include comments and descriptions about the program

17. Which symbol is used to start a multi-line comment in C?

A) //
B) /*
C) #
D) --

Correct Answer: B) /*

18. What does the #include statement do in a C program?

A) It defines a constant
B) It includes the standard input-output library
C) It starts the main function
D) It declares a variable

Correct Answer: B) It includes the standard input-output library

19. What is a header file in C?

A) A file that contains main functions
B) A file with function declarations and macros
C) A file that executes the program
D) A file that contains global variables

Correct Answer: B) A file with function declarations and macros

20. What does the #define directive do in a C program?

A) It declares a global variable
B) It defines a macro or constant value
C) It includes a header file
D) It starts the main function

Correct Answer: B) It defines a macro or constant value

21. Which part of the C program is executed first?

A) Global declarations
B) Documentation section
C) Main function
D) Return statement

Correct Answer: C) Main function

22. In C, what are global variables?

A) Variables declared inside a function
B) Variables declared outside all functions and accessible throughout the program
C) Variables declared only in the main function
D) Variables declared using the #define directive

Correct Answer: B) Variables declared outside all functions and accessible throughout the program

23. What is the correct way to start the main function in C?

A) void main()
B) start main()
C) main()
D) int main()

Correct Answer: D) int main()

24. Why are variables declared at the beginning of a function in C?

A) To make the program run faster
B) To ensure variables are declared before they are used
C) To allocate memory at the end of the program
D) To include libraries

Correct Answer: B) To ensure variables are declared before they are used

25. What is the body of a function in C?

A) The section where variables are declared
B) The section where header files are included
C) The section where the main function is defined
D) The section where the actual operations and logic of the function are implemented

Correct Answer: D) The section where the actual operations and logic of the function are implemented

26. Which function is used to print output in C?

A) scanf()
B) output()
C) printf()
D) print()

Correct Answer: C) printf()

27. What does the return statement in C do?

A) It starts a loop
B) It terminates the program
C) It returns a value from a function
D) It includes a header file

Correct Answer: C) It returns a value from a function

28. Which of the following is NOT a standard C header file?

A) math.h
B) stdlib.h
C) stdvec.h
D) string.h

Correct Answer: C) stdvec.h

29. What is the correct syntax for defining a constant named PI with a value of 3.14 in C?

A) #define PI = 3.14;
B) #define PI 3.14
C) const PI = 3.14;
D) constant PI = 3.14;

Correct Answer: B) #define PI 3.14

30. In a C program, what does int a = 100; do?

A) It defines a header file
B) It declares a function
C) It declares an integer variable a and initializes it to 100
D) It declares a macro

Correct Answer: C) It declares an integer variable a and initializes it to 100

31. Which of the following statements about the main function is true?

A) Every C program must have a main function
B) The main function is optional in a C program
C) The main function can only have one line of code
D) The main function must always return an integer value

Correct Answer: A) Every C program must have a main function

32. What is the use of the printf() function?

A) To read input from the user
B) To display output to the user
C) To declare a variable
D) To include header files

Correct Answer: B) To display output to the user

33. Which operator is used to access the address of a variable in C?

A) *
B) &
C) #
D) %

Correct Answer: B) &

34. Which of the following is a correct way to end a C program?

A) exit()
B) return 0;
C) stop;
D) break;

Correct Answer: B) return 0;

35. What is the result of the expression 5 + 3 * 2 in C?

A) 16
B) 11
C) 10
D) 8

Correct Answer: B) 11

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2.1 - Introduction to C Programming - MCQs

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