Take Assessment: C++ test chapters 4-7 Assistive Technology Tips [opens in new w

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Take Assessment: C++ test chapters 4-7
Assistive Technology Tips [opens in new window]
Name C++ test chapters 4-7
Instructions
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Question 1 text Question 1 2 points Save


You must have a return statement in a non
-void function.
Question 1 answers
True
False

Question 2 text Question 2 2 points Save
Variables defined in the function header are called ________.
Question 2 answers
arguments
parameters
local variables
global variables

Question 3 text Question 3 2 points Save


How many times does the following code print "Welcome to C++"?

int count = 0;

while (count < 10)

{

cout << "Welcome to C++";

count++;

}

Question 3 answers
11
0
9
10

Question 4 text Question 4 2 points Save


Each time a function is invoked, the system stores parameters and local variables in an area of memory, known as ________, which stores elements in last
-in first-out fashion.
Question 4 answers


a stack


an array


a heap


storage area

Question 5 text Question 5 2 points Save
The actual parameters of a function must match the formal parameters in type, order, and number.
Question 5 answers
True
False

Question 6 text Question 6 2 points Save
Assume int t[]={1,2,3,4}. What is t[4]?
Question 6 answers


4
3
accessing t[4] may result in a runtime error
5

Question 7 text Question 7 2 points Save


Review the following code:

void nPrint(char ch,int n)

{

while (n>0)

{

cout << ch;

n--;

}

}

What is k after invoking nPrint('a',k) below?

int k=2;

nPrint('a',k);

Question 7 answers
2
1
3
0

Question 8 text Question 8 2 points Save
When you invoke a function with a parameter, the value of the argument is passed to the parameter. This is referred to as ________
Question 8 answers
call by name
call by value
function invocation
call by reference

Question 9 text Question 9 2 points Save
Suppose int i=5, which of the following can be used as an index for arrray double t[100]?
Question 9 answers


rand()/100
i
i+10
rand%100

Question 10 text Question 10 2 points Save


What is balance after the following code is executed?

int balance =0;

while (balance >= 1)

{

if (balance<9)

continue;

balance = balance -9;

}
Question 10 answers
0
The loop does not end
2
1

Question 11 text Question 11 2 points Save


The signature of a function consists of the function name, parameter list and return type.
Question 11 answers
True
False

Question 12 text Question 12 2 points Save


A void function does not return a value.
Question 12 answers
True
False

Question 13 text Question 13 2 points Save


You may have a return statement in a void function.
Question 13 answers
True
False

Question 14 text Question 14 2 points Save
The array index of the first element in an array is 0.
Question 14 answers
True
False

Question 15 text Question 15 2 points Save


Variables defined inside a function are called ________.
Question 15 answers


global variables


parameters


local variables


arguments

Question 16 text Question 16 2 points Save


The return statement in the following code causes syntax errors.

int main()

{

int max=0;

if (max !=0)

cout << max;

else

return 0;

}
Question 16 answers
True
False

Question 17 text Question 17 2 points Save


What is the output of the following progam?

#include <iostream>

using namespace std;

int main()

{

int x[]={120,200,016};

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

cout << x[i] << " ";

}
Question 17 answers
120 200 14
016 is a syntax error. It should be written as 16.
120 200 20
120 200 16

Question 18 text Question 18 2 points Save


Which of the following function results in 8.0?
Question 18 answers


pow(8.5, 3.4)


max(8.5, 8.0)


floor(8.5)


ceil(8.5)

Question 19 text Question 19 2 points Save


Analyze the following code

int main ()

{

int i =0;

for (i = 0; i <10; i++);

cout <<(i+4);

}
Question 19 answers


The program compiles despite the semicolon (;) on the for loop line, and displays 4.


The for loop in this program is same as for (i =0;i<10;i++){};cout<< i+4;


The program compiles despite the semicolon (;) on the for loop line, and displays 14.


The program has a syntax error because of the semicolon (;) on the for loop line.

Question 20 text Question 20 2 points Save


If a parameter is a reference variable, this parameter becomes an alias for the original variable. This is referred to as ________.
Question 20 answers


pass by name


pass by reference


function invocation


pass by value

Explanation / Answer

1st answer: TRUE

2nd answer: arguments

3rd answer: 10

4th answer: stack

5th answer: TRUE

6th answer: Runtime error

7th answer: 2

8th answer: call by value

9th answer: i, i+10, rand() % 100

10th answer: 0

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