Question

Question 21

You cannot nest structures.

Question 21 options:

	True
	False

Question 22

A structure is useful when the program needs to store different values of different types in a single collection.

Question 22 options:

	True
	False

Question 23

mystring.find(str, x) returns the first position at or beyond position x where the string str is found in mystring. str may be either a string object or a character array

Question 23 options:

	True
	False

Question 24  

Given the code snippet below, What prints?

string str = "C++ Programming is awesome";

for (int i = 0; i < str.size(); i++)

    {

        if (str[i] == 'a')

        {

            ++ count;

        }

       if (i% 3 == 0)

        {

            ++ count;

        }

    }

    cout << "count is " << " = " << count;

Question 24 options:

	11
	10
	5
	2

Question 25

Passing a structure as a constant parameter allows __________________

Question 25 options:

	Read-only access
	Waste space
	Slows down a program
	All of the above.

Question 26

1. Given the code below, which variable is not initialized as a variable of CityInfo

struct CityInfo

{

string cityName;

string state;

long population;

int distance;

};

Question 26 options:

	CityInfo location = {"Asheville", "NC", 50000, 28};
	CityInfo location = {"Asheville", "NC};
	CityInfo location = {"Asheville", "NC", , 28};
	CityInfo location = {"Asheville"};

Question 27

If one address comes before another address in memory, the second address is considered the “greater than” the first.

Question 27 options:

	True
	False

Question 28

The code snippet below converts all upper characters to lower characters

for (int i=0; i<strlen(str); i++)

    {

        if (isupper(str[i]))

            str[i] = str[i] - 32;

    }

Question 28 options:

	True
	False

Question 29  

Question 29 options:

Use the correct function to read a line of text which is put in by the user.

string fullName;

cout << "Type your full name: ";

(cin, fullName);  

cout << "Your name is: " << fullName;

Question 30

1. Given the following code snippet, can you use the if statement to compare the two strings?

string test1 = "This is a string";

    string test2 = "This is a string";

if (strcmp(test1, test2) ){ ….}

Question 30 options:

	True
	False

Answer 1

Question 21:

Correct Answer: False

Explanation:

A structure is a user-defined data type that is a collection of different data types. The structure data member can be accessed by using the structure variable and dot operator or structure pointer variable and arrow operator.

The given statement is false because a structure can be nested.

Question 22:

Correct Answer: True

Explanation:

A structure is a user-defined data type that is a collection of different data types. The structure data member can be accessed by using the structure variable and dot operator or structure pointer variable and arrow operator.

So, the given statement is true.

Question 23:

Correct Answer: True

Explanation:

The method find() is used to return the first occurrence of the string and it may be string object or character array.

So, the given statement is true.

Question 24:

Correct Answer: 11

Explanation:

The string size is 26.

The first if statement as given below:

if (str[i] == 'a')
{
++count;
}

will inceament the count by 2 because the character 'a' is present two times in the given string.

The second if statement as given below:

if (i% 3 == 0)
{
++count;
}

will increment the count nine times.

The final value of count is 9+2=11.

So, only the first option is correct.