Question

Please, explain clearly each line of code with your answers.

Question 1 Consider the following code snippet:

int ctr = 0;

int myarray[3];

for (int i = 0; i < 3; i++)

{

myarray[i] = ctr;

ctr = ctr + i;

}

cout << myarray[2];

What is the output of the code snippet?

Question 2

Consider the following code snippet:

int cnt = 0;

int numarray[2][3];

for (int i = 0; i < 3; i++)

{

  for (int j = 0; j < 2; j++)

  {

    numarray[j][i] = cnt;

    cnt++;

  }

}

What is the value of numarray[1][2] after the code snippet is executed?

		2
		5
		3
		4

Question 3

Consider the following code snippet:

int numarray[2][3] = { { 3, 2, 3 }};

cout << numarray[0][0];

cout << numarray[1][0];

What is the output of the given code snippet?

		00
		31
		30
		03

Question 4

Which one of the following statements is valid for declaring a vector as a function parameter?

		A vector declared as a function parameter should be accompanied with its size.
		A vector declared as a function parameter is a reference parameter by default.
		An element of the vector cannot be modified in a function when the vector is declaredas a parameter.
		An element of the vector can be modified if declared using the & sign as a function parameter.

Question 5

Which one of the following is a correct declaration for a function named passvect with the vector parameter mynum of size 10, so that the function modifies the contents of the actual parameter mynum?

		void passvect(vector<int>& mynum(10))
		void passvect(vector<int> mynum)
		void passvect(vector<int>& mynum)
		void passvect(mynum)

Question 6

What is the output of the following code snippet?

vector<int> num(3);

num.push_back(3);

cout << num.size();

		1
		2
		3
		4

Question 7

What is the result of the following definition of a vector?

vector<double> points;

		The statement causes a compile-time error as the size of the vector is not defined.
		The statement creates a vector of size 0.
		The statement creates a vector with unlimited size.
		The statement creates a vector of size 1.

Question 8

Which one of the following code snippets accepts the integer input in a vector named num1 and stores the even integers of num1 in another vector named evennum?

		vector<int> num1; vector<int> evennum; int data; for (int i = 0; i < 10; i++) {    cin >> data;    num1.push_back(data);    if (num1[i] % 2 == 0)    {       evennum.push_back(num1[i]);    } }
		vector<int> num1; vector<int> evennum; int data;for (int i = 0; i < 10; i++) {    cin >> data;    num1.push_back(data);    if (num1[i] % 2 != 0)    {       evennum.push_back(num1[i]);    } }
		vector<int> num1; vector<int> evennum; int data; for int i = 0; i < 10; i++) {    cin >> data;    num1.push_back(data);    if (num1[i] % 2 != 0)    {       evennum[i] = num1[i]);    } }
		vector<int> num1; vector<int> evennum; int data; for (int i = 0; i < 10; i++) {    cin >> data;    num1[i] = data;    if (num1[i] % 2 == 0)    {       evennum[i] = num1[i]);    } }

Question 9

Consider the following code snippet:

vector<int> num(3);

num[0] = 1;

num[1] = 2;

num[2] = 3;

num.pop_back();

Which element or elements of the vector are removed by the pop_back() function in the given code snippet?

		The element with index 0
		The element with index 1
		The element with index 2
		All the elements

Question 10

When a compiler encounters a function parameter for a single-subscripted array of the form  int a[], it converts the parameter to:

		int a
		int &a
		int *a
		No conversion is necessary.

Question 11

Given that  k is an integer array starting at location  2000,  kPtr is a pointer to  k and each integer is stored in 4 bytes of memory, what location does  kPtr + 3 point to?

		2003
		2006
		2012
		2024

Question 12

What does the following statement declare?
int *countPtr, count;

		Two int variables.
		One pointer to an int and one int variable.
		Two pointers to ints.
		The declaration is invalid.

Question 13

Which of the function prototypes below is correct for a function which processes a 2D array?

		int max2d(int a[][], int rows);
		int max2d(int a[][], int rows, int columns);
		int max2d(int a[][5], int rows, int columns);
		int max2d(int a[5][], int rows;

Answer 1

Please find the answer below.

Please do comments in case of any issue. Also, don't forget to rate the question. Thanks.

1).

2)

3)

4)

Correct choice is below...

An element of the vector can be modified if declared using the & sign as a function parameter.

NOTE that::: As per Chegg policy only first 4 subparts is allowed to answer.