Strings

Question 1

Literals written using single quotes

Data Type: char

Can only store one character

Answer 1

Characters

Question 2

outputs the ASCII table in Linux

Answer 2

man ascii

Question 3

Character functions can be found in the _____ header file

Answer 3

ctype.h

Question 4

[Character Function] Checks whether the character is alphabetic

Answer 4

isalpha(char c);

Question 5

[Character Function] Checks whether a character is a decimal digit

Answer 5

isdigit(char c);

Question 6

[Character Function] Checks if char is alphanumeric

Answer 6

isalnum(char c);

Question 7

[Character Function] checks if char is in lowercase

Answer 7

islower(char c);

Question 8

[Character Function] Checks if char is in uppercase

Answer 8

isupper(char c);

Question 9

[Character Function] Checks if char c is a punctuation

Answer 9

ispunct(char c);

Question 10

[Character Function] Checks if char is a white space

Answer 10

isspace(char c);

Question 11

[Character Function] Converts char to lowercase

Answer 11

tolower(char c);

Question 12

[Character Function] Converts char to uppercase

Answer 12

toupper(char c);

Question 13

Literals written using double quotes.

An array of characters.

Answer 13

Strings

Question 14

Strings are terminated by the null character ___

Answer 14

\0

Question 15

Strings can store up to ____ characters

Answer 15

N-1 (bc a slot is reserved for the terminating character \0)

Question 16

Ways to initialize a string

Answer 16

1. Just like an array, specify each character that will be a part of the string as well as don’t forget to include the terminating character \0 at the end.
2. By using a string literal.
3. Using a pointer to create a constant string.

Question 17

String functions can be found in the _____ header file.

Answer 17

string.h

Question 18

[String Function] Concatenate two strings

Answer 18

strcat(char str1, char str2);

Question 19

[String Function] Compares two strings. Returns an int.

Answer 19

strcmp(char str1, char str2);

Question 20

[String Function] Copies a string to the other.

Answer 20

strcpy(char dest, char src);

Question 21

[String Function] Returns the length of the string.

Answer 21

strlen(char str);