OVERVIEW OF COMPUTERS AND C-PROGRAMMING

 UNIT-1 : OVERVIEW OF COMPUTERS AND C-PROGRAMMING

 

1.        Which of the following is used to perform computations on the entered data?

(A)   Memory   (B) Processor     (C) Input device      (D) Output device

2.        Which of the following is not an input device?

(A)   Plotter     (B) Scanner         (C) Keyboard          (D) Mouse

3.        Which of the following is not an output device?

(a) Plotter        (b) Scanner                    (c) Printer                   (d) Speaker

4.        Which of the following is used as a primary memory of the computer?

(a) Magnetic storage device                           (b) RAM

(c) Optical storage device                               (d) Magneto-optical storage device

5.        Which one of the following is a volatile memory?

(a) RAM         (b) Auxiliary memory            (c) ROM          (d) Secondary memory

6.        Software is defined as

(a) Set of memory cells          (b) Set of Programs   (c) Set of hardware                                                (d) None

7.        Which statement is a valid?

(a) 1KB=1024 bytes              (b) 1 MB=2018 bytes
(c) 1 MB=10000 kilobytes     (d) i KB=100 bytes

9.        Which of the following is a pictorial representation of an algorithm?

(a) Program     (b) Flowchart     (c) Algorithm              (d) Pseudo code

10.   Among the following, which converts assembly language into machine language

(a) Interpreter     (b) Compiler           (c) Assembler   (d) Algorithm

11. Which one of the following is known as the ―language of computer ?

(a) Programming language                             (b) High-level language

  (c) Machine language                                   (d) Assembly language

12.                                    translates high level language into machine

language

(a) Compiler   (b) Translator     (c) Processor               (d) Loader

13.   Which of the following is not a valid variable declaration

(a) int 2class;  (b) int class2;  (c) int class_2;            (d) int ELSE;

14.  
The range of ―unsigned int‖ data type is        

(a) -32768 to 32767    (b) 0 to 65535 (c) -65536 to 65535    (d) -128 to 127

15.   The size of ―long double‖ data type in 16-bit machine is           

(a) 8 bytes       (b) 10 bytes    (c) 2 bytes       (d) 4bytes

16.   The range of ―char‖ data type is         

(a) -128 to 127            (b) 0 to 255     (c) -32768 to 32767    (d) None

17.   The size of ―char‖ data type is         

(a) 1 byte        (b) 2 bytes       (c) 4 bytes       (d) 10 bytes

18.   The format specifier that is used to read or write a character is           

(a) %f              (b) %d                         (c) %c                         (d) %s

19.   Which one of the following is a string constant

(a) ‗3‘             (b) “hello”      (c) 30               (d) None

20.   If no precision is specified for floating point number then printf() prints decimal positions.

(a) Two           (b)Four            (c) Six             (d) Zero

21.   What is the result of 8 | 4 ?

(a) 0         (b) 1            (c) 4     (d) 12

22.   Which of the following operator is used to combine two or more relational expressions 

(a) ^     (b) ~                (c) &            (d) &&

23. ~(100111) gives             
(a) 010010       (b) 011000      (c) 010100       (d) 111001

24. 10<<3 gives             

(a) 40               (b) 1                (c) 80               (d) 30

25.       Shifting a number ‗n‘ by ‗s‘ bits to left is equivalent to which of the following?

(a) 2^s/n            (b) n/2^s            (c) s²/n            (d) n*2^s

26.       Shifting a number ‗n‘ by ‗s‘ bits to right is equivalent to which of the following?

(a) 2^s/n            (b) n/2^s            (c) s²/n            (d) n*2^s

27.       Based on the precedence levels and associativity the 8+4*5+6/2 expression yields

(a) 43               (b) 34        (c) 31               (d) 41

28.                   operators are used for shifting bits to right and left

(a)    >> and <<             (b) > and <                  (c) ?and :         (d) None

29.       The expression a++ is referred as

(a)   Pre increment        (b) Post increment    (c) Before increment (d) After increment

30.       The expression ++a referred as

(a)    Pre increment      (b) Post increment      (c) Before increment (d) After increment

31.       If a=3, b=5 the value of the expression ++a+b++ is        

(a)   10               (b) 9                (c) 8                 (d) None of the above

32.                                    defines the order of evaluation when operators have the same precedence

(a)   Priority   (b) Precedence               (c) Associativity        (d) None of the above

33.       Which one of the following is having highest precedence

 (a) ++                   (b) &&        (c) ( )   (d) ,

34.       Which one of the following is having least precedence

 (a) ++                       (b) &&        (c) ( )   (d) ,

35.  String constants are enclosed in

(a) ‗ ‗              (b) “ “             (c) ( )               (d) [ ]

36.       Character constants are enclosed in

(a) „ „              (b) ― ―             (c) ( )               (d) [ ]

37.       The escape sequence character causes the cursor to move to the next line on the screen

(a) \t                (b) \n               (c) \r                (d) \v

38.       The assignment statement ―sum=sum+i;‖ is equivalent to

(A) sum=+i;                (B) sum+=i;               (C) sum= =sum+i;      (D) None

39.       sizeof() operator returns the size of an operand in           

(A) Bits                       (B) Nibble                   (C) Bytes        (D) None

40.       Which of the following is the correct way of using type casting

(A) c=(int)a/b;           (B) c=a(int)/b;            (C) c=int a/b; (D) None

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