Deck 9: Character Strings

Question 1

A string literal is also referred to as a character set.

Answer 1

False

Question 2

In C, a string is terminated by a special end-of-string symbolic constant named NULL.

Answer 2

True

Question 3

In C, '\n' is the sentinel marking the end of the string.

Answer 3

False

Question 4

The double quotes in "Good Morning!" are part of the string.

Question 5

In C, the individual characters in a string can be input, manipulated, or output using standard array-handling techniques utilizing either subscript or pointer notations.

Question 6

The getchar() and putchar() functions deal with strings as complete units.

Question 7

In general, a scanf() function call can always be used in place of a gets() function call.

Question 8

Trying to enter the characters This is a string using the statement gets(message); results in the word This being assigned to the message array.

Question 9

gets() substitutes \0 when an \n is encountered.

Question 10

puts() substitutes \0 when an \n is encountered.

Question 11

Both '\n' and "\n" are recognized by the compiler as containing the newline character.

Question 12

Good programming practice requires that you end the last output display with a newline escape sequence, usually as the single character '\n'.

Question 13

In C, a character is stored as an integer value.

Question 14

strng[++i] shows an example of the use of the postfix increment operator.

Question 15

The NULL statement is '\0';.

Question 16

C provides built-in operations for complete arrays, such as array assignment or array comparison.

Question 17

In C, assignment and relational operations are not provided for strings.

Question 18

The function strtok(string, char) locates the position of the first occurrence of the char within string; it returns the address of the character.

Question 19

Using string library functions requires that the file string.h be included in your program before the function is called.

Question 20

Attempting to copy a larger string value into the destination array using strcpy causes the copy to overflow the destination array beginning with the memory area immediately following the last array element.

Question 21

The first 256 characters of the Unicode code are identical to the complete 256-character ASCII code.

Question 22

toupper() returns the uppercase equivalent of its argument if the character is lowercase; otherwise, it returns NULL.

Question 23

The char[] itoa(string) function converts an integer to an ASCII string.

Question 24

One of the most common methods of validating input data is to accept all numbers as strings.

Question 25

When you use any of the four functions, printf(), scanf(), sprintf(), or sscanf(), the control string containing the conversion control sequences need not be explicitly contained within the function.

Question 26

A(n) ____ is any sequence of characters enclosed in double quotes.

A)string literal
B)array
C)character array
D)data structure

Question 27

____ is an example of a string.

A)'a'
B){'s', 't', 'r', 'i', 'n', 'g'}
C)"\n"
D)'This is a string.'

Question 28

In C, a string is stored as a ____ array of characters.

A)one-dimensional
B)two-dimensional
C)static
D)global

Question 29

The value assigned to the NULL constant is ____.

A)'\n'
B)'\0'
C)'\NULL'
D)"NULL"

Question 30

The string "Good Morning!" is stored in memory using a character array of size ____.

A)13
B)14
C)15
D)16

Question 31

The ____ routine provides for the input of individual characters.

A)gets()
B)puts()
C)getchar()
D)putchar()

Question 32

Programs that use the gets() routine must include the ____ header file.

A)stdio.h
B)stdlib.h
C)string.h
D)ctype.h

Question 33

The ____ function continuously accepts and stores the characters typed at the terminal into the character array passed as an argument.

A)gets()
B)puts()
C)getchar()
D)putchar()

Question 34

Pressing the Enter key at the terminal generates a newline character, ____.

A)\0
B)\e
C)\r
D)\n

Question 35

The statement ____ is a direct replacement for the statement puts(message);.

A)printf("%s",message);
B)printf("%s\n",message);
C)scanf("%s",message);
D)scanf("%s\n",message);

Question 36

The ____ function reads a set of characters up to either a blank space or a newline character.

A)readline()
B)gets()
C)scanf()
D)putchar()

Question 37

The ____ function stops accepting characters only when a newline is detected.

A)readline()
B)gets()
C)scanf()
D)putchar()

Question 38

The array char message[81]; can be used to store a string of up to ____ characters.

A)79
B)80
C)81
D)82

Question 39

Complete the following function:
/* copy string2 to string1 */
Void strcopy(char string1[], char string2[])
{
Int i = 0;
While (string2[i] != '\0')
{
String1[i] = string2[i];
I++;
}
____
}

A)return;
B)string1[i - 1] = '\0';
C)string1[i] = '\0';
D)string1[i + 1] = '\0';

Question 40

Line ____ in the following section of code checks for the end-of-string character.
1 void strcopy (char string1[], char string2[])
2 {
3 int i = 0;
4
5 while (string2[i] != '\0')
6 {
7 string1[i] = string2[i];
8 i++;
9 }
10 string1[i] = '\0';
11 }

A)3
B)5
C)7
D)10

Question 41

Line 5 in the function below can be replaced with ____.
1 void strcopy (char string1[], char string2[])
2 {
3 int i = 0;
4
5 while (string2[i] != '\0')
6 {
7 string1[i] = string2[i];
8 i++;
9 }
10 string1[i] = '\0';
11 }

A)while (string2[i])
B)while (!string2[i])
C)while (string2[i] < '\0')
D)while (string2[i] != '\n')

Question 42

The function ____ appends str2 to the end of str1.

A)strcpy(str1, str2)
B)strcmp(str1, str2)
C)strncpy(str1, str2,n)
D)strcat(str1, str2)

Question 43

____ does not produce the same result as char test[5] = "abcd";.

A)char test[] = "abcd";
B)char test[5] = {'a', 'b', 'c', 'd', '\0'};
C)char test[5] = {'a', 'b', 'c', 'd'};
D)char test[] = {'a', 'b', 'c', 'd', '\0'};

Question 44

If the contents of a string variable named destString are "Hello", then the function call strcat(destString, " there World!") results in the string value ____ being assigned to destString.

A)"there World!"
B)"Helloe World!"
C)"Hellothere World!"
D)"Hello there World!"

Question 45

Programs that use the isalpha() routine must include the ____ header file.

A)stdio.h
B)stdlib.h
C)string.h
D)ctype.h

Question 46

Programs that use the atoi() routine must include the ____ header file.

A)stdio.h
B)stdlib.h
C)string.h
D)ctype.h

Question 47

When using ____, a full path name requires that two backslashes be used to separate individual directory and filenames.

A)#include
B)#define
C)atoi
D)tolower

Question 48

When using #include, the characters ____, tell the compiler to begin searching for the included file in the C compiler system library directory.

A)""
B)<>
C)//
D)\\

Question 49

When using #include, the characters ____, tell the compiler to start looking in the default directory where the program file is located.

A)""
B)<>
C)//
D)\\

Question 50

The statement ____ displays the message Have a Happy Day, right-justified, in a field of 25 characters.

A) printf("%s25","Have a Happy Day");
B) printf("%s-25","Have a Happy Day");
C) printf("%25s","Have a Happy Day");
D) printf("%-25s","Have a Happy Day");

Question 51

Typically, the ____ function is used to "assemble" a string from smaller pieces until a complete line of characters is ready to be written, either to the standard output device or to a file.

A) strcpy()
C) sscanf()
B) strcat()
D) sprintf()