a) James Gosling
b) Dennis Ritche
c) Rasmus Lerdorf
d) Bjarne Stroustrup
2. C was developed in __________
a) 1970
b) 1972
c) 1974
d) 1976
3. C language is a ________
a) Procedural oriented programming language
b) General purpose programming language
c) Structured programming
d) All of the above
4. Which of the following is not a valid C variable name?
a) int number;
b) float rate
c) int variable_count
d) Int $main
5. A data type is a _______ set of values along with a set of rules for allowed operations
a) Infinite
b) Finite
c) Fixed
d) Variable
6. A variable is a _________ which is able to hold a representation that denotes a value.
a) Container
b) Box
c) Pack
d) Carton
7. The C preprocessors are specified with ______ symbol.
a) #
b) $
c) “ ”
d) &
8. The scanf() is a predefined function in _________ header file.
a) stdlib.h
b) ctype.h
c) stdio.h
d) stdarg.h
9. Header files _____
a) Contain function declarations
b) Can be included to a program
c) End with .h extension
d) All of these
10. Can programmers create their own header files?
a) Yes
b) No
11. What is the extension of C source file?
a) .txt
b) .CS
c) .CPP
d) .C
12. Which of these can be used for a variable name in C?
a) Identifier & keyword
b) Identifier
c) Keyword
d) None of these
13. Find a correct C keyword
a) Float
b) Int
c) Long
d) double
14. Which is not a valid keyword in C?
a) For
b) While
c) do-while
d) Switch
15. All keywords in C are in _______
a) Lowe Case letters
b) Upper Case letters
c) camel Case letters
d) none of the mentioned
16. How many keywords are there in C language?
a) 32
b) 33
c) 64
d) 18
17. What is the correct syntax to declare a variable in C?
a) data_type variable_name;
b) data_type as variable_name;
c) variable_name data_type;
d) variable_name as data_type;
18. Which of the following special symbol allowed in a variable name?
a) * (asterisk)
b) | (pipeline)
c) – (hyphen)
d) _ (underscore)
19. Which of the following functions must be included in all C programs?
a) start()
b) system()
c) main()
d) program()
20. In C, an uninitialized variable may have
a) null value
b) null string
c) garbage value
d) zero value
21. Which character must be used to end a C statement?
a) . (dot)
b) ; (semicolon)
c) : (colon)
d) ‘ (single-quote)
22. Which symbol must be used to signal the beginning and ending of code blocks or compound statements?
a) { }
b) à and ß
a) 1970
b) 1972
c) 1974
d) 1976
3. C language is a ________
a) Procedural oriented programming language
b) General purpose programming language
c) Structured programming
d) All of the above
4. Which of the following is not a valid C variable name?
a) int number;
b) float rate
c) int variable_count
d) Int $main
5. A data type is a _______ set of values along with a set of rules for allowed operations
a) Infinite
b) Finite
c) Fixed
d) Variable
6. A variable is a _________ which is able to hold a representation that denotes a value.
a) Container
b) Box
c) Pack
d) Carton
7. The C preprocessors are specified with ______ symbol.
a) #
b) $
c) “ ”
d) &
8. The scanf() is a predefined function in _________ header file.
a) stdlib.h
b) ctype.h
c) stdio.h
d) stdarg.h
9. Header files _____
a) Contain function declarations
b) Can be included to a program
c) End with .h extension
d) All of these
10. Can programmers create their own header files?
a) Yes
b) No
11. What is the extension of C source file?
a) .txt
b) .CS
c) .CPP
d) .C
12. Which of these can be used for a variable name in C?
a) Identifier & keyword
b) Identifier
c) Keyword
d) None of these
13. Find a correct C keyword
a) Float
b) Int
c) Long
d) double
14. Which is not a valid keyword in C?
a) For
b) While
c) do-while
d) Switch
15. All keywords in C are in _______
a) Lowe Case letters
b) Upper Case letters
c) camel Case letters
d) none of the mentioned
16. How many keywords are there in C language?
a) 32
b) 33
c) 64
d) 18
17. What is the correct syntax to declare a variable in C?
a) data_type variable_name;
b) data_type as variable_name;
c) variable_name data_type;
d) variable_name as data_type;
18. Which of the following special symbol allowed in a variable name?
a) * (asterisk)
b) | (pipeline)
c) – (hyphen)
d) _ (underscore)
19. Which of the following functions must be included in all C programs?
a) start()
b) system()
c) main()
d) program()
20. In C, an uninitialized variable may have
a) null value
b) null string
c) garbage value
d) zero value
21. Which character must be used to end a C statement?
a) . (dot)
b) ; (semicolon)
c) : (colon)
d) ‘ (single-quote)
22. Which symbol must be used to signal the beginning and ending of code blocks or compound statements?
a) { }
b) à and ß
c) BEGIN and END
d) ( and )
23. Which of the following is a correct syntax for inserting comments in C program?
a) */ comments */
b) ** comments **
c) /* comments */
d) { comments }
24. Which escape sequence take the control to next horizontal tabulation position?
a) ‘\n’
b) ‘\t’
c) ‘\0’
d) ‘\v’
25. In C programming, which one of the following is string termination character?
a) ‘\0’
b) ‘\n’
c) ‘\b’
d) ‘\t
26. The directives for preprocessors begin with
a) &
b) //
c) #
d) <
27. Which operator gives remainder after division?
a) / (divide)
b) % (modulo)
c) ^
d) ~
28. Which of the following is not the primary constant in C language?
a) Integer
b) Float
c) Union
d) Character
29. Which are the fundamental data types in C?
a) char
b) int
c) float
d) All of the above
30. How many byte(s) does a char type take in C?
a) 1
b) 2
c) 3
d) 4
31. What is the name of “&” operator in C?
a) Ampersand
b) And
c) Address of
d) None of the above
32. Program execution always starts with
a) Main
b) Variable
c) Include
d) Case
33. Which C keyword is used to extend the visibility of variables?
a) extend
b) extends
c) extern
d) auto
34. The range of values in integer data type is
a) -32768 to 32767
b) -128 to 127
c) -128 to 256
d) None of the above
35. Which is correct with respect to the size of the data types in C?
a) char>int>float
b) char<int<float
c) int<char<float
d) int<flaot<char
36. For which type, the format specifier “%i” is used?
a) int
b) char
c) float
d) double
37. Which is the correct format specifier for double type value in C?
a) %d
b) %f
c) %lf
d) %LF
38. What value is returned to the operating system upon the successful completion of a C program?
a) -1
b) 1
c) 0
d) -2
39. Which one of the following is the correct operator to compare two variables?
a) :=
b) =
c) Equal
d) ==
40. Which one of the following is the operator for logical and?
a) &
b) &&
c) |
d) |&
41. Which of the following is not a bitwise operator?
a) &&
b) <<
c) ~
d) ^
42. Which of the following symbol is used for AND operator?
a) ||
b) &
c) &&
d) $$
43. Which of the following is not logical operator?
a) &
b) &&
c) ||
d) !
44. The _____ operator is true only when both the operands are true.
a) bitwise or
b) bitwise and
c) logical and
d) Boolean
45. In C programming, ‘++’ is _________ operator
a) Increment
b) decrement
c) Assigning
d) overloading
46. Increment (++) and decrement (--) are the ________ operators in C
a) Unary
b) Binary
c) Ternary
d) None of the above
47. Which operator is used to find the remainder of two numbers in C?
a) /
b) \
c) %
d) //
48. Which of the following is not an arithmetic expression?
a) x=10
b) x /=10
c) x %=10
d) x !=10
49. Which of the following are valid decision-making statements in C?
a) if
b) switch
c) nested if
d) All of these
50. Decision making in the C programming language is ___
a) Repeating the same statement multiple times
b) Executing a set of statements based on some condition
c) Providing a name of the block of code
d) All of these
51. What is the correct syntax of if statement in C program?
a) If (condition) { }
b) If (condition):
c) If {[condition]}
d) None of these
52. The if statement is a conditional statement
a) True
b) False
53. When the condition of if statement is false, the flow of code will _____
a) Go into the if block
b) Exit the program
c) Continue the code after skipping the if block
d) None of these
54. Which statement is required to execute a block of code when the condition is false?
a) for
b) if
c) else
d) All of these
55. The if-else if-else statement in C programming is used
a) Create multiple conditional statements
b) Return values
c) Loop in if-else block
d) All of these
56. Multiple values of the same variable can be tested using____
a) switch
b) for
c) Function
d) All of these
57. Without a break statement in switch what will happen?
a) All cases will work properly
b) Cases will fall through after matching the first check
c) Switch will throw error
d) All of these
58. When all cases are unmatched which case is matched in a switch statement?
a) Default case
b) First case
c) No case
d) None of these
59. Loops in C programming are used to______
a) Execute a statement based on a condition
b) Execute a block of code repeatedly
c) Create a variable
d) None of these
60. Which of the following is not a jump statement?
a) break
b) Continue
c) Escape
d) Goto
61. What is an example of iteration in C?
a) for
b) while
c) do-while
d) All of the mentioned
62. Which loop executes the block a specific number of times?
a) while loop
b) for loop
c) do…while loop
d) all of these
63. Which of the following parts of the for loop can be eliminated in C?
a) initialization
b) condition
c) increment
d) All of these
64. When all parts of the for loop are eliminated, what will happen?
a) For loop will not work
b) Infinite for loop
c) Error
d) None of these
65. Which of the following is an exit controlled loop?
a) While
b) For
c) do-while
d) None of the above
66. Which one of the following is a loop construct that will always be executed once?
a) for
b) while
c) switch
d) do-while
67. When the condition of the do-while loop is false, how many times will it execute the code?
a) 0
b) 1
c) Infinite
d) All of these
68. Can a loop be nested in C programming?
a) Yes
b) No
69. What will happen if the loop condition will never become false?
a) Program will throw an error
b) Program will loop infinitely
c) Loop will not run
d) None of these
70. Which of the following creates infinite loop:
a) for (;;)
b) then (;;)
c) when (;;)
d) if (;;)
71. Which of the following is valid syntax for creating a while loop?
a) While { } (condition)
b) While(condition) { }
c) While { }
d) All of these
72. What will you use if you are not intended to get a return value?
a) static
b) const
c) volatile
d) void
73. How will you print \n on the screen?
a) printf(“\n”);
b) echo “\ \n”;
c) printf(‘\n’);
d) printf(“\ \n”);
74. Which of the following cannot be checked in a switch-case statement?
a) Character
b) Integer
c) Float
d) Enum
75. What is Array?
a) Collection of different type of elements
b) Collection of similar type of elements
c) None of the above
d) Both A and C
76. In C programming, array index always starts from
a) 0
b) 1
c) 2
d) 3
77. You can access elements of an array by________
a) values
b) indices
c) memory addresses
d) All of the above
78. Which is the correct syntax to declare an array in C?
a) data_type array_name[array_size];
b) data_type array_name{array_size};
c) data_type array_name[];
d) all of the above
79. Which of the following correctly declares an array?
a) int array[10]
b) Int array
c) Array {10}
d) array array [10]
80. How are String represented in memory in C?
a) An array of characters
b) The object of some class
c) Same as other primitive data types
d) linked List of characters
81. What is the disadvantage of arrays in C?
a) The amount of memory to be allocated should be known beforehand
b) Elements of an array can be accessed in constant time.
c) Elements are stored in contiguous memory blocks.
d) Multiple other data structures can be implemented using arrays.
82. What is right way to initialize array?
a) int num[6] = { 2, 4, 12, 5, 45, 5 };
b) int n{} = { 2, 4, 12, 5, 45, 5 };
c) int n{6} = { 2, 4, 12 };
d) int n(6) = { 2, 4, 12, 5, 45, 5 }
83. Which of these best describes an array?
a) A data structure that shows a hierarchical behavior
b) Container of objects of similar types
c) Arrays are immutable once initialized
d) Array is not a data structure
84. What is an Array in C language?
a) A group of elements of same data type.
b) An array contains more than one element
c) Array elements are stored in memory in continuous or contiguous locations.
d) All the above
85. What are the Types of Arrays?
a) int, float, char, double
b) struct, enum
c) long
d) All the above
86. What is the maximum number of dimensions an array in C may have?
a) 2
b) 8
c) 16
d) Theoretically no limit. The only practical limits are memory size and compilers
87. Which of the following is the correct way to declare a multidimensional array in Java?
a) int arr[[]];
b) int[] arr;
c) int[][]arr;
d) int[[]] arr;
88. What does the following declaration mean?
int (*ptr)[10];
a) ptr is an array of 10 integers
b) ptr is an pointer to array
c) ptr is a pointer to an array of 10 integers
d) ptr is array of pointers to 10 integers
89. Array elements are always stored in ________ memory locations.
a) Random
b) None of the above
c) Sequential
d) Sequential and Random
90. Array is an example of _______ type memory allocation.
a) Compile time
b) Run time
c) Both A and B
d) None of the above
91. In the below statement, what does the "arr" indicates?
char *arr[20];
a) arr is an array of 20 characters
b) arr is an array of 20 character pointers
c) arr is an array of function
d) arr is a pointer to an array
92. The parameter passing mechanism for an array is
a) call by reference
b) call by value
c) call by value-result
d) None of the above
93. If we pass an array as an argument to a function, what actually gets passed?
a) Value of elements in array
b) First element of the array
c) Base address of the array
d) Address of the last element of array
94. Choose correct statement about Functions in C Language-
a) A Function is a group of c statements which can be reused any number of times
b) Every Function has a return type
c) Every Function may not return a value
d) All the above
95. What is a function in C?
a) User defined data type
b) Block of code which can be reused
c) Declaration syntax
d) None of these
96. Which of the below syntax is the correct way of declaring a function?
a) return function_name() { }
b) data_type function_name(parameter) { }
c) void function_name ()
d) None of these
97. Which keyword is used to return values from function?
a) return
b) Value
c) Switch
d) All of these
98. In C programming, a function can return
a) Single value
b) Double value
c) Many values
d) None of these
99. Functions in C can accept multiple parameters. True or False?
a) True
b) False
100. A function which calls itself is called a ___ function.
a) Self Function
b) Auto Function
c) Recursive Function
d) Static Function
101. In which header file, sqrt() and pow() functions are defined?
a) include.h
b) conio.h
c) iostream.h
d) math.h
102. The sqrt() function is used to calculate which value?
a) Square
b) Square of reverse bits
c) Square root
d) None of these
103. How would you round off a value from 1.66 t0 2.0?
a) ceil(1.66)
b) floor(1.66)
c) roundup(1.66)
d) roundto(1.66)
104. In which header file, strcpy(), strcat(), strlen() functions are declared ?
a) include.h
b) string.h
c) math.h
d) conio.h
105. A string is terminated by______
a) Newline(‘\n’)
b) Null(‘\0’)
c) Whitespace
d) None of the above
106. Which format specifier is used to read and print the string using printf() and scanf() in C?
a) %c
b) %str
c) %p
d) %s
107. To use the function tolower(), which of the following header file should include
a) string.h
b) conio.h
c) ctype.h
d) don’t need any header file
108. The keyword used to transfer control from a function back to the calling function is
a) switch
b) goto
c) go back
d) return.
109. What are the types of functions in C Language?
a) Library Functions
b) User Defined Functions
c) Both Library and User Defined
d) None of the above
110. Choose correct statements about C Language Pass By Value.
a) Pass By Value copies the variable value in one more memory location
b) Pass By Value does not use Pointers
c) Pass By Value protects your source or original variables from changes in outside functions or called functions
d) All the above
111. What is the limit for number of functions in a C Program?
a) 16
b) 31
c) 32
d) No Limit
112. Every C Program should contain which function?
a) printf()
b) show()
c) scanf()
d) main()
113. A recursive function in C ____
a) Call itself again and again
b) Loop over a parameter
c) Return multiple values
d) None of these
114. A C program contains______
a) At least one function
b) No function
c) No value from command line
d) All of these
115. The string function, strcmp() is used for
a) Comparing string
b) Copying string
c) Pattern matching
d) Concatenating strings
116. Which function is used to concatenate two strings in C?
a) concat()
b) cat()
c) stringcat()
d) strcat()
117. Which function is used to compare two strings in C?
a) strcmp()
b) strcmpi()
c) compare()
d) cmpi()
118. Which function is used to compare two strings with ignoring case in C?
a) strcmp()
b) strcmpi()
c) compare()
d) cmpi()
119. If the two strings are identical , then strcmp() function returns
a) -1
b) 1
c) 0
d) Yes
120. What is the minimum number of functions to be present in a C Program?
a) 1
b) 2
c) 3
d) 4
121. What characters are allowed in a C function name identifier?
a) Alphabets, Numbers, %, $, _
b) Alphabets, Numbers, Underscore ( _ )
c) Alphabets, Numbers, dollar $
d) Alphabets, Numbers, %
122. Arguments passed to a function in C language are called ___ arguments.
a) Formal arguments
b) Actual Arguments
c) Definite Arguments
d) Ideal Arguments
123. Arguments received by a function in C language are called ___ arguments.
a) Definite arguments
b) Formal arguments
c) Actual arguments
d) Ideal argument
124. Choose a corrects statement about C language function arguments.
a) Number of arguments should be same when sending and receiving
b) Type of each argument should match exactly
c) Order of each argument should be same
d) All the above
125. Choose a non Library C function below:
a) printf()
b) scanf()
c) fprintf()
d) printf4()
126. What is the default return value of a C function if not specified explicitly?
a) -1
b) 0
c) 1
d) None of the above
127. Uses of function
a) Helps to avoid repeating a set of statements many times
b) Enhances the logical clarity of the program
c) Helps to avoid repeated programming across programs
d) Makes the debugging task easier
e) All of the above
128. The function fprintf is used in a program:
a) When too many printf calls have been alrady used in the program
b) In place of printf, since printf uses more memory
c) When output i to be printed on to a file
d) All of above
129. A recursive function can be replaced with __ in C language.
a) for loop
b) while loop
c) do while loop
d) All the above
130. The default parameter passing mechanism is
a) Call by value
b) Call by reference
c) Call by value result
d) None of the above
131. Which of these is not a valid parameter passing method in C?
a) Call by value
b) Call by reference
c) Call by pointer
d) All of these
132. Which of the following is the collection of different data types?
a) structure
b) string
c) array
d) All of these
133. Which operator is used to access the member of a structure?
a) –
b) >
c) *
d) .
134. What will be used when terminating a structure ?
a) :
b) }
c) ;
d) ;;
135. Which of these is a user-defined data type in C?
a) int
b) union
c) char
d) All of these
136. “A union can contain data of different data types”. True or False?
a) True
b) False
137. Which keyword is used to define a union?
a) Un
b) union
c) Union
d) None of these
138. The size of a union is ___
a) Sum of sizes of all members
b) Predefined by the compiler
c) Equal to size of largest data type
d) None of these
139. All members of union ____
a) Stored in consecutive memory location
b) Share same memory location
c) Store at different location
d) All of these
140. The member of union can be accessed using_______ ?
a) Dot Operator (.)
b) And Operator (&)
c) Asterisk Operator (*)
d) Right Shift Operator (>)
141. In which case union is better than structure?
a) Less memory is available
b) Fasrter compilation is required
c) When functions are included
d) None of thes
142. A pointer is
a) A variable that stores address of an instruction
b) A variable that stores address of other variable
c) A keyword used to create variables
d) None of these
143. A pointer is a variable, which holds ___________
a) Memory address
b) Files
c) Int variable
d) Char variable
144. The operator used for dereferencing or indirection is
a) *
b) &
c) Ã
a) *
b) &
c) Ã
145. What is wild pointer?
a) Pointer which is wild in nature
b) Pointer which has no value.
c) Pointer which is not initialized
d) None
146. ______ is a pointer that occurs at the time when the object is de-allocated from memory without modifying the value of the pointer.
a) Dangling pointer
b) Wild pointer
c) Void pointer
d) Null pointer
147. A _____ can be assigned the address of any data type.
a) Dangling pointer
b) Wild pointer
c) Void pointer
d) Null pointer
148. Which pointer is called general-purpose pointer?
a) Dangling pointer
b) Wild pointer
c) Void pointer
d) Null pointer
149. In order to fetch the address of the variable we write preceding _________ sign before variable name.
a) Percent(%)
b) Comma(,)
c) Ampersand(&)
d) Asterisk (*)
150. Which is an indirection operator among the following?
FILE *fp;
a) &
b) *
c) ->
d) .
151. Prior to using a pointer variable it should be
a) Declared
b) Initialized
c) Both declared and initialized
d) None of these
152. In C a pointer variable to an integer can be created by the decalaration
a) int p*;
b) int *p;
c) int +p;
d) int $p;
153. In pointer, ______ is needed for returning the address of the variable following it.
a) &
b) &&
c) ~
d) *
154. How to declare a double–pointer in C?
a) int *val
b) int **val
c) int &val
d) int *&val
155. In C, which function is not related to file handling?
a) fprintf
b) printf
c) fclose
d) fopen
156. Which of the following function is used to open a file in C?
a) fopen()
b) fclose()
c) fseek()
d) fgets()
157. Which of the following are correct file opening modes in C?
a) r
b) rb
c) w
d) All of the above
158. What is the return type of the fopen() function in C?
a) Pointer to a File object.
b) Pointer to an integer
c) An integer.
d) None of the mentioned.
159. Which character(s) is/are used to open a binary file in append mode in C?
a) a
b) b
c) ba
d) ab
160. Which character(s) is/are used to open a binary file in reading and writing mode in C?
a) rw
b) rwb
c) rb+
d) rwb+
161. Which function is used to close an opened file?
a) close()
b) fclose()
c) file_close()
d) fileclose()
162. Which function is used to seek the file pointer position in C?
a) seek()
b) fseek()
c) fileseek()
d) fmove()
163. What is the purpose of “rb” in fopen()function used below in the code? fp = fopen("source.txt", "rb");
a) Open “source.txt” in binary mode for reading
b) Open “source.txt” in binary mode for reading and writing
c) Create a new file “source.txt” for reading and writing
d) None of the above
164. What is the value of EOF in C?
a) -1
b) 0
c) 1
d) Null
165. The command line arguments are handled using?
a) void()
b) main()
c) header files
d) macros
166. argc refers to the?
a) number of arguments passed
b) a pointer array
c) Both A and B
d) None of the above
167. argv[] is a?
a) a pointer array
b) It points to each argument passed to the program.
c) Both A and B
d) None of the above
168. What argv means in command line argument?
a) Array of Strings
b) Array of character pointers
c) Array of pointers
d) pointer to a character array
169. Which of the following syntax is correct for command-line arguments?
a) int main(char c,int v)
b) int main(int v,char c)
c) int main(char *arv[], int arg)
d) int main(int var, char *argv[])
170. What does argc and argv indicate in command-line arguments? (Assuming: int main(int argc, char *argv[]) )
a) argument control, argument variable
b) argument control, argument vector
c) argument count, argument variable
d) argument count, argument vector
171. What type of array is generally generated in Command-line argument?
a) Single dimension array
b) 2-Dimensional Square Array
c) Jagged Array
d) 2-Dimensional Rectangular Array
172. The maximum combined length of the command-line arguments including the spaces between adjacent arguments is:
a) 128 characters
b) 256 characters
c) 67 characters
d) It may vary from one operating system to another
173. What do the 'c' and 'v' in argc and argv stands for?
a) 'c' means argument control 'v' means argument vector
b) 'c' means argument count 'v' means argument vertex
c) 'c' means argument count 'v' means argument vector
d) 'c' means argument configuration 'v' means argument visibility
174. Which of the following is TRUE about argv?
a) It is an array of character pointers
b) It is a pointer to an array of character pointers
c) It is an array of strings
d) None of above
175. The index of the last argument in command line arguments?
a) argc – 2
b) argc – 1
c) argc
d) argc + 1
176. Which one of these is equivalent to argc?
a) Number of Arguments
b) Number of Arguments – 1
c) Number of Arguments + 2
d) Number of Arguments + 1
177. Which of the following statements are FALSE about the below code?
int main(int ac, char *av[])
{
}
a) The variables ac and av are always local to main()
b) In place of ac and av, argc and argv should be used.
c) av[] contains addresses of arguments supplied at a command line
d) ac contains count of arguments supplied at command-line
178. The first argument in command line arguments is
a) The number of command-line arguments the program was invoked with;
b) A pointer to an array of character strings that contain the arguments
c) Both A & B
d) Nothing
179. The second (argument vector) in command line arguments is
a) A pointer to an array of character strings that contain the arguments,one per string
b) The number of command-line arguments the program was invoked with
c) both A & B
d) None of the mentioned
180. What is argv[0] in command line arguments?
a) The name of the files which are passed to the program
b) Count of the arguments in argv[] vector
c) The name by which the program was invoked
d) None of the mentioned
181. Diagrammatic or symbolic represent of an algorithm is called
a) Data flow diagram
b) Flow chart
c) E.R diagram
d) None of the above
182. All elements of a structure are allocated contiguous memory locations.
a) fprintf
b) printf
c) fclose
d) fopen
156. Which of the following function is used to open a file in C?
a) fopen()
b) fclose()
c) fseek()
d) fgets()
157. Which of the following are correct file opening modes in C?
a) r
b) rb
c) w
d) All of the above
158. What is the return type of the fopen() function in C?
a) Pointer to a File object.
b) Pointer to an integer
c) An integer.
d) None of the mentioned.
159. Which character(s) is/are used to open a binary file in append mode in C?
a) a
b) b
c) ba
d) ab
160. Which character(s) is/are used to open a binary file in reading and writing mode in C?
a) rw
b) rwb
c) rb+
d) rwb+
161. Which function is used to close an opened file?
a) close()
b) fclose()
c) file_close()
d) fileclose()
162. Which function is used to seek the file pointer position in C?
a) seek()
b) fseek()
c) fileseek()
d) fmove()
163. What is the purpose of “rb” in fopen()function used below in the code? fp = fopen("source.txt", "rb");
a) Open “source.txt” in binary mode for reading
b) Open “source.txt” in binary mode for reading and writing
c) Create a new file “source.txt” for reading and writing
d) None of the above
164. What is the value of EOF in C?
a) -1
b) 0
c) 1
d) Null
165. The command line arguments are handled using?
a) void()
b) main()
c) header files
d) macros
166. argc refers to the?
a) number of arguments passed
b) a pointer array
c) Both A and B
d) None of the above
167. argv[] is a?
a) a pointer array
b) It points to each argument passed to the program.
c) Both A and B
d) None of the above
168. What argv means in command line argument?
a) Array of Strings
b) Array of character pointers
c) Array of pointers
d) pointer to a character array
169. Which of the following syntax is correct for command-line arguments?
a) int main(char c,int v)
b) int main(int v,char c)
c) int main(char *arv[], int arg)
d) int main(int var, char *argv[])
170. What does argc and argv indicate in command-line arguments? (Assuming: int main(int argc, char *argv[]) )
a) argument control, argument variable
b) argument control, argument vector
c) argument count, argument variable
d) argument count, argument vector
171. What type of array is generally generated in Command-line argument?
a) Single dimension array
b) 2-Dimensional Square Array
c) Jagged Array
d) 2-Dimensional Rectangular Array
172. The maximum combined length of the command-line arguments including the spaces between adjacent arguments is:
a) 128 characters
b) 256 characters
c) 67 characters
d) It may vary from one operating system to another
173. What do the 'c' and 'v' in argc and argv stands for?
a) 'c' means argument control 'v' means argument vector
b) 'c' means argument count 'v' means argument vertex
c) 'c' means argument count 'v' means argument vector
d) 'c' means argument configuration 'v' means argument visibility
174. Which of the following is TRUE about argv?
a) It is an array of character pointers
b) It is a pointer to an array of character pointers
c) It is an array of strings
d) None of above
175. The index of the last argument in command line arguments?
a) argc – 2
b) argc – 1
c) argc
d) argc + 1
176. Which one of these is equivalent to argc?
a) Number of Arguments
b) Number of Arguments – 1
c) Number of Arguments + 2
d) Number of Arguments + 1
177. Which of the following statements are FALSE about the below code?
int main(int ac, char *av[])
{
}
a) The variables ac and av are always local to main()
b) In place of ac and av, argc and argv should be used.
c) av[] contains addresses of arguments supplied at a command line
d) ac contains count of arguments supplied at command-line
178. The first argument in command line arguments is
a) The number of command-line arguments the program was invoked with;
b) A pointer to an array of character strings that contain the arguments
c) Both A & B
d) Nothing
179. The second (argument vector) in command line arguments is
a) A pointer to an array of character strings that contain the arguments,one per string
b) The number of command-line arguments the program was invoked with
c) both A & B
d) None of the mentioned
180. What is argv[0] in command line arguments?
a) The name of the files which are passed to the program
b) Count of the arguments in argv[] vector
c) The name by which the program was invoked
d) None of the mentioned
181. Diagrammatic or symbolic represent of an algorithm is called
a) Data flow diagram
b) Flow chart
c) E.R diagram
d) None of the above
182. All elements of a structure are allocated contiguous memory locations.
- True
- False
183. What is the result of the following statement?
X=10;
Y=++X;
a) X=10, Y=10
b) X=10, Y=11
c) X=11, Y=10
d) X=11, Y=11
184. What is the result of the following statement?
X=Y=Z=0;
a) x=0,y=NULL, z=NULL
b) x=0,y=0,z=0
c) x=0,y=1,z=2
d) the statement is incorrect
185. What will be the output of the program?
#include<stdio.h>
int main()
{
int y=128;
const int x=y;
printf(“%d\n”,x);
return 0;
}
a) 128
b) Garbage value
c) Error
d) 0
186. What will be the output of the following code?
#include<stdio.h>
int main()
{
int a=3, b=5;
int t=a;
a=b;
b=t;
printf(“%d %d”,a,b);
return 0;
}
a) 3 3
b) 3 4
c) 3 5
d) 5 3
187. What will be the output of the following code?
int main()
{
int sum=2+4/2+6*2;
printf(“%d”,sum);
return 0;
}
a) 2
b) 15
c) 16
d) 17
188. What will be the output of the following code?
#include<stdio.h>
int main()
{
int x=1,y=2;
printf(x>y? “ABC”: x==y? “DEF”: “IJK”);
return 0;
}
a) ABC
b) DEF
c) IJK
d) Compile time error
189. What is the output of this C code?
#include<stdio.h>
main()
{
int n=0, m=0;
if(n>0)
if(m>0)
printf(“True”);
else
printf(“False”);
}
a) True
b) False
c) No output will be printed
d) Run time error
190.
#include<stdio.h>
void solve()
{
int ch=2;
switch(ch)
{
case 1:printf(“1”);
case 2:printf(“2”);
case 3:printf(“3”);
default: printf(“None”);
}
}
int main()
{
solve ();
return 0
}
a) 1 2 3 None
b) 2
c) 2 3 None
d) None
Explanation: This is an example of Fall-Though in switch statements in absence of break statements.
191. #include<stdio.h>
int main()
{
int X=40;
{
int X=20;
printf(“%d”,X);
}
printf(“%d\n”,X);
return 0;
}
a) 20 20
b) 20 40
c) 40 20
d) Error
192. What will be printed after execution of the following code?
void main()
{
int arr[10] = {1,2,3,4,5};
printf("%d", arr[5]);
}
a) 0
b) 5
c) 6
d) Garbage Value
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