21. The variables which can be accessed by all modules in a program, are called

local variables

internal variables

external variable

global variables

22. C programming language by itself provides

input facility

output facility

both input and output facilities

no input and output facilities

23. C programming language provides operations which deal directly with objects such as

strings and sets

lists and arrays

characters, integers, and floating point numbers

all of these

24. In C programming language, if the first and the second operands of operator + are of types int and float, respectively, the result will be of type

int

float

char

long int

25. The value of ab if ab & 0 x 3f equals 0 x 27 is

047

0 x 0 f

0 x f3

0 x 27

26. If the declaration unsigned c:5; is replaced by unsigned : 6; then

it results in a syntax error

it is meaningless

compiler will give a new name for the field

none of these

27. int i = 5; is a statement in a C program.

during execution, value of i may change but not its address

during execution both the address and value may change

repeated execution may result in different addresses for i

i may not have an associated address

28. The program fragment int i = 263 ; putchar (i) ; prints

263

ASCII equivalent of 263

rings the bell

garbage

29. Printing a character as an integer

results in the printing of a negative integer

always prints a positive integer

prints a value that is implementation dependent

none of these

30. Which of the following 'C' type is not a primitive data structure?

int

float

char

none of these

31. A declaration "short int" is used for variables

which have a short duration in a program

which have short names

which may require less storage than normal integers

all of these

32. The declaration "unsigned u" indicates u is a/an

unsigned character

unsigned integer

character

none of' these

33. An external variable

is globally accessible by all functions

has a declaration

will be initialized to 0 if not initialized

all of these

34. Consider the declaration char street[10] = "abcdefghi"; Choose the correct remark(s)

&street and street will have different values

&street is meaningless

&street+1 and street+1 will have the same values

None of the above

35. A file is preferable to an array of structures because

file lives even after the program that created it terminates

memory space will not be wasted

there are many system tools to manipulate files

All of the abone

36. Choose the correct statements

Array stores data of the same type

Array can be a part of a structure

Array of structure is allowed

All of the above

37. Pick the correct answers if x is an one dimensional array, then

&x[ i ] is same as x + i - 1

*(x + 1) is same as *(&x [ i ])

*(x + i) is same as x[ i ]

both (b) & (c)

38. While sorting a set of names, representing the names as an array of pointers is preferable to representing the names as a two dimensional array of characters because

storage needed will be proportional to the size of the data

execution will be faster

swapping process becomes easier and faster

All of the above

39. If arr is a two dimensional array of 10 rows and 12 columns, then arr (5) logically points to the

sixth row

Fifth row

fifth column

sixth column

40. A set of names can be represented as a

two-dimensional array of characters

one-dimensional array of strings

one-dimensional array of pointers to character

All of above