Character and String Manipulation

Question 1

is usually declared as an array of char.

Answer 1

C-String

Question 2

A valid C string requires

Answer 2

the presence of a terminating “null
character” (a character with ASCII value 0, usually represented by the character literal ‘\0’).

Question 3

declares a set of functions to
work with C-style string

Answer 3

The C++ <cstring> header file</cstring>

Question 4

copies character string from source to destination

Answer 4

strcpy

Question 5

copies specified bytes of characters from source to destination.

Answer 5

strncpy

Question 6

appends a copy of a string to the end of another string

Answer 6

strcat

Question 7

appends a specified number of characters of a string to the end of another string

Answer 7

strncat

Question 8

returns length of given string

Answer 8

strlen

Question 9

compares two null terminating string. The
comparison is done lexicographically.

Answer 9

strcmp

Question 10

compares a specified number of characters of two null terminating strings. The comparison is done lexicographically.

Answer 10

strncmp

Question 11

can be used to read a line of input
and place the string of characters on that line into a C-string variable.

Answer 11

getline

Question 12

allows your program to read in one character
of input and store it in a variable of type char

Answer 12

get function

Question 13

This function member is analogous to the member function get except that it is used for output rather than input.

Answer 13

put function

Question 14

allows your program to output one
character

Answer 14

put function

Question 15

This header declares a set of functions to classify and transform individual characters.

Answer 15

C++ <cctype></cctype>

Question 16

Convert uppercase letters to lowercase

Answer 16

tolower

Question 17

Convert lowercase letter to uppercase

Answer 17

toupper

Question 18

Check if character is uppercase letter

Answer 18

isupper

Question 19

Check if character is lowercase letter

Answer 19

islower

Question 20

Check if character is alphabetic

Answer 20

isalpha

Question 21

Check if character is decimal digit

Answer 21

isdigit

Question 22

Check if character is alphanumeric

Answer 22

isalnum

Question 23

Check if character is a white space

Answer 23

Isspace

Question 24

Check if character is a punctuation character

Answer 24

ispunct

Question 25

Check if character is printable

Answer 25

isprint

Question 26

Check if character has graphical representation

Answer 26

isgraph

Question 27

Check if character is a control character

Answer 27

Isctrl