C++ Strings

Multiple Choice

How many types of strings do we have in C++?

• 1

• 2

• 3

• 4

Multiple Choice

Which is TRUE about strings?

• It is enclosed in single quotes

• It has a fixed length

• It is a collection of strings

• It is a collection of characters

​Quick Quiz

​Lecture on Strings

Multiple Choice

Which of the following is closest equivalent to the code below?

char str[] = "hello";

• char str[10] = "hello";

• char str[10] = {'h','e','l','l','o',\0'};

• char str[10] = {'h','e','l','l','o'};

• char str[6] = "hello";

Multiple Choice

What C String will be stored in the letterString after the following code is run?

char letterString[20] = "DoBeDo";

strcat(letterString, " to you");

• DoBeDo

• to you

• DoBeDotoyou

• DoBeDo to you

Multiple Choice

What is the output of the following code?

• Hello

• and Good bye

• Hello and Good Bye

• Compile Error

Multiple Choice

What should be done to make this code work?

• Line 9: strcat(string_var[], " and Good Bye"

• Line 10: cout << sting_var[];

• Line 8: char string_var[20] = "Hello";

• Line 9: string_var += " and Good Bye";

Multiple Choice

What is the maximum length of a string that can be placed in the c-string declared below?

char text[6];

• 4

• 5

• 6

• 7

Multiple Choice

What code will copy the string "hello" to the c-string declaration below?

char text[6];

• text = "hello";

• text[] = "hello";

• strcpy(text,"hello");

• strcat(text,"hello");

Fill in the Blanks

How many characters are there in 'n'?

Note: The answer must be numeric.

Fill in the Blanks

How many characters are there in '\n'?

Note: The answer must be numeric.

Fill in the Blanks

How many characters are there in "Josh"?

Note: The answer must be numeric.

Multiple Choice

Are the codes below equivalent?

char letters[] = "ABC";

char letters[] = {'A','B','C'};

• Yes

• No

Multiple Choice

Why are the codes below NOT equivalent?

char letters[] = "ABC";

char letters[] = {'A','B','C'};

• The first is a c-string and the second is a string

• The first is a cstring and the second is a character array

• The first is a string and the second is a c-string

• The first is a character array and the second is a c-string

Multiple Choice

What is the output of the code given the input "Hello friend!"

• Equal

• Not Equal

Multiple Choice

What is the output of the code snippet?

• Hello Hello

• Jello Jello

• Hello Jello

• Jello Hello