Arrays and Strings MCQs

Question 1

The mem functions are meant for . . . . . . . .

Accepted Answer

manipulating objects as character arrays

Answer

returning a pointer to the token

Answer

returning a pointer for implemented-defined string

Answer

returning a pointer to first occurrence of string in another string

Question 2

What will the given C code do? int memcmp(const void *str1, const void *str2, size_t n)

Accepted Answer

compares the first n bytes of str1 and str2

Answer

copies the first n bytes of str1 to str2

Answer

copies the first n bytes of str2 to str1

Answer

invalid function

Question 3

Which code from the given option return pointer to last occurrence of c in ch or NULL if not present?

Accepted Answer

char *strrchr(ch, c)

Answer

char *strchr(ch, c)

Answer

char *strncat(ch, c)

Answer

char *strcat(ch, c)

Question 4

The toupper() function converts a . . . . . . . . to the corresponding . . . . . . . .

Accepted Answer

lowercase, uppercase

Answer

uppercase, lowercase

Answer

binary, decimal

Answer

decimal, binary

Question 5

ERANGE is reported on an overflow or an underflow.

Accepted Answer

true

Answer

false

Question 6

The . . . . . . . . function converts an uppercase letter to the corresponding lowercase letter.

Accepted Answer

tolower()

Answer

islower()

Answer

isupper()

Answer

toupper()

Question 7

Functions whose names begin with "strn"

Accepted Answer

manipulates sequence of non - null characters.

Answer

manipulates sequences of arbitrary characters

Answer

manipulates null-terminated sequences of characters

Answer

returns a pointer to the token

Question 8

Which function will you choose to join two words?

Accepted Answer

strcat()

Answer

strcpy()

Answer

strncon()

Answer

memcon()

Question 9

Which among the following option is the full set of character class Hexadecimal digits?

Accepted Answer

{ 0 1 2 3 4 5 6 7 8 9 A B C D E F a b c d e f }

Answer

{ 0 1 2 3 4 5 6 7 8 9 A B C D E F }

Answer

{ 0 1 2 3 4 5 6 7 8 9 a b c d e f }

Answer

{ 0 1 2 3 4 5 6 7 8 9}