C Programming Multiple Choice Questions and Answers for Freshers Free Download, C Language MCQ Questions and Answers, C Language Questions and Answers for Interview, C Programming Interview Questions.
01. Who is the father of C language?
A) Rasmus Lerdorf
B) Steve Jobs
C) Dennis Ritchie
D) James Gosling
Ans. Dennis Ritchie
02. which year was C language developed?
A) 1971
B) 1970
C) 1973
D) 1972
Ans. 1972
03. C Language is a successor to which language?
A) BASIC
B) D Language
C) B Language
D) FORTRAN
Ans. B Language
04. All keywords in C are in ____________ ?
A) CamelCase letters
B) LowerCase letters
C) UpperCase letters
D) None of the mentioned
Ans. LowerCase letters
05. Low level language is?
A) language with big program size.
B) language with small program size.
C) Difficult to understand and readability is questionable.
D) Human readable like language.
Ans. Difficult to understand and readability is questionable.
06. High level language is a?
A) language with big program size.
B) language with small program size.
C) Difficult to understand and readability is questionable.
D) Human readable like language.
Ans. Human readable like language.
07. Which of the following is true for variable names in C?
A) Variable can be of any length
B) Variable names cannot start with a digit.
C) It is not an error to declare a variable to be one of the keywords(like goto, static)
D) They can contain alphanumeric characters as well as special characters
Ans. Variable names cannot start with a digit.
08. How many keywords are there in C language?
A) 32
B) 34
C) 35
D) 36
Ans. 32
09. C is _______ type of programming language?
A) Bit level language
B) Functional
C) Object Oriented
D) Procedural
Ans. Procedural
10. Which is valid C expression?
A) int my_num = 100,000;
B) int my_num = 100001;
C) int my_num = 100000;
D) int my_num = 100002;
Ans. int my_num = 100000;
11. What are the new features of C11 or ISO IEC 9899 2011 standard?
A) Bounds Checking Interfaces, Anonymous Strurctures
B) Multi Threading, Anonymous Unions, quick_exit
C) Type generic Macros, Static Assertions
D) All Options
Ans. All Options
12. Which of the following cannot be a variable name in C?
A) export
B) true
C) friend
D) volatile
Ans. volatile
13. C language is a __ ?
A) Structured programming.
B) General purpose programming language.
C) Procedural oriented programming language.
D) All of the above
Ans. All of the above
14. C language was invented in which laboratories?
A) IBM Labs
B) AT&T Bell Labs
C) Uniliver Labs
D) Verizon Labs
Ans. AT&T Bell Labs
15. Which of the following declaration is not supported by C language?
A) char *str;
B) float str = 3e2;
C) Both “String str;” and “float str = 3e2;”
D) String str;
Ans. String str;
16. Which is not a valid keyword in C language?
A) while
B) do-while
C) for
D) switch
Ans. do-while
17. BCPL Language is also called?
A) C Language
B) D Language
C) B Language
D) All
Ans. All
18. Which keyword is used to prevent any changes in the variable within a C program?
A) const
B) immutable
C) mutable
D) volatile
Ans. const
19. What is an identifier in C language?
A) An identifier is a combination of alphanumeric characters used for conditional and control statements
B) An identifier is a combination of alphanumeric characters used for any variable, function, label name
C) Both A and B
D) None of the above
Ans. An identifier is a combination of alphanumeric characters used for any variable, function, label name
20. C language was invented to develop which Operating System?
A) Ubuntu
B) Linux
C) Unix
D) Android
Ans. Unix
21. What is the result of logical or relational expression in C?
A) 0 or 1
B) True or False
C) 0 if an expression is false and any positive number if an expression is true
D) All
Ans. 0 or 1
22. Can we place comments between the statement to comments a part of the code?
A) No
B) Yes
C) All
Ans. Yes
23. C language is used in the development of?
A) Graphic applications
B) Word Processors
C) Databases
D) All
Ans. All
24. Which of the following typecasting is accepted by C language?
A) Widening & Narrowing conversions
B) Narrowing conversions
C) Widening conversions
D) All
Ans. Widening & Narrowing conversions
25. ___ is an informal name for ISO/IEC 9899:1999, a past version of the C programming language standard?
A) C87
B) C80
C) C99
D) C89
Ans. C99
26. A C program is a combination of?
A) Functions
B) Statements
C) Statements
D) All
Ans. All
27. Where in C the order of precedence of operators do not exist?
A) Within while, do-while
B) Within a macro definition
C) Within conditional statements, if, else
D) All
Ans. All
28. The C source file is processed by the __?
A) Assembler
B) Pdf
C) Interpreter
D) Compiler
Ans. Compiler
29. Correct way of commenting a single line is?
A) /*printf(“Hello C..”);
printf(“How are you.”);*/
B) /printf(“Hello C..”);/
printf(“How are you.”);
C) //printf(“Hello C..”);
printf(“How are you.”);
D) *printf(“Hello C..”);
printf(“How are you.”);
Ans. //printf(“Hello C..”);
printf(“How are you.”);
30. Which of the following is NOT possible with any 2 operators in C?
A) Same precedence, different associativity
B) Different precedence, different associativity
C) Different precedence, same associativity
D) All
Ans. Same precedence, different associativity
31. How many whitespace characters are allowed in C language?
A) 4
B) 5
C) 6
D) 7
Ans. 5
32. Single Line Comment // is also called?
A) PHP Style Comment
B) C++ Style Comment
C) Java Style Comment
D) All
Ans. All
33. Single Line Comment // is also called?
A) PHP Style Comment
B) C++ Style Comment
C) Java Style Comment
D) All
Ans. All
34. What is an example of iteration in C?
A) while
B) for
C) do-while
D) All
Ans. All
35. How many punctuation characters are allowed in C language?
A) 28
B) 29
C) 30
D) 31
Ans. 29
36. What is an Identifier in C Language?
A) Name of a Macros
B) Name of a Function or Variable
C) Name of Structure or Union
D) All
Ans. All
37. Functions can return enumeration constants in C?
A) false
B) true
C) depends on the standard
D) depends on the compiler
Ans. true
38. What is the extension of a C language header file?
A) .h
B) .c99
C) .cpp
D) .c
Ans. .h
39. An Identifier may contain?
A) Underscore _ symbol
B) Numbers 0 to 9 Unicode Numbers in other languages
C) Letters a-z, A-Z in Basic character set. Unicode alphabet characters other languages
D) All
Ans. All
40. Functions in C Language are always _________?
A) External and Internal are not valid terms for functions
B) Other
C) External
D) Internal
Ans. External
41. Does C language support object-oriented approach?
A) No
B) Yes
C) All
Ans. No
42. What is the number of characters used to distinguish Identifier or Names of Functions and Global variables?
A) 30
B) 31
C) 32
D) 33
Ans. 31
43. Which of following is not accepted in C?
A) static static int a; //a static variable prefixed with static
B) static a = 10; //static as
C) static int func (int); //parameter as static
D) All
Ans. static static int a; //a static variable prefixed with static
44. Which is/are the disadvantage(s) of C language?
A) Inefficient Memory Management & No Garbage Collection
B) Low level of abstraction
C) static int func (int); //parameter as static
D) All
Ans. All
45. What is length of an Identifier that is unique for Non Global Variables and Non Function Names?
A) 60
B) 61
C) 62
D) 63
Ans. 63
46. Property which allows to produce different executable for different platforms in C is called?
A) Recursive macros
B) Selective inclusion
C) Conditional compilation
D) File inclusion
Ans. Conditional compilation
47. Which are the fundamental data types in C?
A) float
B) int
C) char
D) All
Ans. All
48. An Identifier can start with?
A) Any character that can be typed on a keyboard
B) Alphabet
C) Underscore ( _ ) sign
D) Option A & Option B
Ans. Option B & Option C
49. AWhat is #include <stdio.h>?
A) Depends on the standard
B) File inclusion directive
C) Inclusion directive
D) Preprocessor directive
Ans. Preprocessor directive
50. How many byte(s) does a char type take in C?
A) 1
B) 2
C) 3
D) 4
Ans. 1
