COSC 1436 EXAM 2 ACTUAL EXAM COMPLETE QUESTIONS AND
VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR
When an if statement is placed within the conditionally-executed code of another if
statement, this is known as:
A. nesting
B. complexity
C. None of these
D. validation
E. overloading - ANSWER-A. nesting
Given that x = 2, y = 1, and z = 0, what will the following cout statement display?
cout << "answer = " << (x || !y && z) << endl;
A. answer = 0
B. answer = 1
C. None of these
D. answer = 2 - ANSWER-B. answer = 1
These operators connect two or more relational expressions into one, or reverse the
logic of an expression. - ANSWER-logical
An expression that has any value other than 0 is considered true by and if
statement. (T/F) - ANSWER-True
What is the value of the following expression?
true && false - ANSWER-false
1
,Given the if/else statement:
if (a < 5)
b = 12;
else
d = 30;
Which of the following performs the same operation?
A. a >= 5 ? d = 30 : b = 12;
B. None of these
C. d = 30 ? b = 12 : a = 5;
D. b < 5 ? b = 12 : d = 30;
E. a < 5 ? b = 12 : d = 30; - ANSWER-E
What is the output of the following code segment if the user enters 90 for the
score?
cout << "enter your test score: ";
cin >> test_score;
if (test_score < 60)
cout << "You failed the test." << endl;
if (test_score > 60)
cout << "You passed the test." << endl;
else
cout << "You need to study harder next time." << endl;
A. You need to study harder next time.
B. You passed the test.
2
,You need to study harder next time.
C. You failed the test.
You need to study harder next time.
D. You passed the test.
E. You failed the test. - ANSWER-D
You should be careful when using the equality operator to compare floating point
values because of potential round-off errors. (T/F) - ANSWER-True
Which of the following is evaluated first, given the expression: A && B || C &&
!D
A. B || C
B. A && B
C. C && D
D. !D - ANSWER-D
Relational operators allow you to ________ numbers. - ANSWER-compare
The default section is required in a switch statement. (T/F) - ANSWER-False
What is the output of the following segment of code if the value 4 is input by the
user when asked to enter a number?
int num;
int total = 0;
cout << "Enter a number from 1 to 10: ";
3
, cin >> num;
switch (num)
{
case 1:
case 2: total = 5;
case 3: total = 10;
case 4: total = total + 3;
case 8: total = total + 6;
default: total = total + 4;
}
cout << total << endl; - ANSWER-13 (Fall through adds 3, then 6, then 4)
Which line in the following program will cause a compiler error?
1 #include <iostream>
2 using namespace std;
3 int main()
4{
5 int number = 5;
6 if (number >= 0 && <= 100)
7 cout << "passed. \n";
8 else
9 cout << "failed. \n";
10 return 0;
11 } - ANSWER-Line 6 (Missing variable "number" on the right side of the AND
operator)
4
VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR
When an if statement is placed within the conditionally-executed code of another if
statement, this is known as:
A. nesting
B. complexity
C. None of these
D. validation
E. overloading - ANSWER-A. nesting
Given that x = 2, y = 1, and z = 0, what will the following cout statement display?
cout << "answer = " << (x || !y && z) << endl;
A. answer = 0
B. answer = 1
C. None of these
D. answer = 2 - ANSWER-B. answer = 1
These operators connect two or more relational expressions into one, or reverse the
logic of an expression. - ANSWER-logical
An expression that has any value other than 0 is considered true by and if
statement. (T/F) - ANSWER-True
What is the value of the following expression?
true && false - ANSWER-false
1
,Given the if/else statement:
if (a < 5)
b = 12;
else
d = 30;
Which of the following performs the same operation?
A. a >= 5 ? d = 30 : b = 12;
B. None of these
C. d = 30 ? b = 12 : a = 5;
D. b < 5 ? b = 12 : d = 30;
E. a < 5 ? b = 12 : d = 30; - ANSWER-E
What is the output of the following code segment if the user enters 90 for the
score?
cout << "enter your test score: ";
cin >> test_score;
if (test_score < 60)
cout << "You failed the test." << endl;
if (test_score > 60)
cout << "You passed the test." << endl;
else
cout << "You need to study harder next time." << endl;
A. You need to study harder next time.
B. You passed the test.
2
,You need to study harder next time.
C. You failed the test.
You need to study harder next time.
D. You passed the test.
E. You failed the test. - ANSWER-D
You should be careful when using the equality operator to compare floating point
values because of potential round-off errors. (T/F) - ANSWER-True
Which of the following is evaluated first, given the expression: A && B || C &&
!D
A. B || C
B. A && B
C. C && D
D. !D - ANSWER-D
Relational operators allow you to ________ numbers. - ANSWER-compare
The default section is required in a switch statement. (T/F) - ANSWER-False
What is the output of the following segment of code if the value 4 is input by the
user when asked to enter a number?
int num;
int total = 0;
cout << "Enter a number from 1 to 10: ";
3
, cin >> num;
switch (num)
{
case 1:
case 2: total = 5;
case 3: total = 10;
case 4: total = total + 3;
case 8: total = total + 6;
default: total = total + 4;
}
cout << total << endl; - ANSWER-13 (Fall through adds 3, then 6, then 4)
Which line in the following program will cause a compiler error?
1 #include <iostream>
2 using namespace std;
3 int main()
4{
5 int number = 5;
6 if (number >= 0 && <= 100)
7 cout << "passed. \n";
8 else
9 cout << "failed. \n";
10 return 0;
11 } - ANSWER-Line 6 (Missing variable "number" on the right side of the AND
operator)
4
