Question 1

Given the following code fragment, what is the final value of y?
Int x, y;
X = -1;
Y = 0;
Whilex <= 3)
{
Y += 2;
X += 1;
}

Accepted Answer

A)   2
B)   10
C)   6
D)   8 B

Question 2

What is the value of x after the following statements?
Int x;
X = 15/4;

Accepted Answer

A)   15
B)   3
C)   4
D)   3.75 B

Question 3

Which of the following is a valid identifier?

Accepted Answer

A)   3com
B)   three_com
C)   3_com
D)   3-com
E)   dollar$ C

Question 4

Given the following code fragment, which of the following expressions is always true?
Int x;
Cin >> x;

Accepted Answer

A)   if x 
B)   if x==1) 
C)   if x / 3)  >1 ) 
D)   if x = 1)

Question 5

What is the value of x after the following statements?
Int x;
X = 0;
X = x + 30;

Accepted Answer

A)   0
B)   30
C)   33
D)   garbage

Question 6

What is the final value of x after the following fragment of code executes?
Int x=0;
Do
{
X++;
}whilex > 0);

Accepted Answer

A)   8
B)   9
C)   10
D)   11
E)   infinite loop.

Question 7

The body of a while loop may never execute.

Accepted Answer

A) True 
 B)False

Question 8

Variable names may begin with a number.

Accepted Answer

A) True 
 B)False

Question 9

The stream that is used for input from the keyboard is called ___________.

Accepted Answer

The answer of The stream that is used for input...

Question 10

Which of the following statements is NOT legal?

Accepted Answer

A)   char ch='b';
B)   char ch='0';
C)   char ch=65;
D)   char ch="cc";

Question 11

The opposite of x >3 && x  10)

Accepted Answer

A) True 
 B)False

Question 12

What is the output of the following code?
Cout << "This is a \" << endl;

Accepted Answer

A)   This is a
B)   This is a \
C)   nothing, it is a syntax error
D)   This is a \ endl

Question 13

A loop that always executes the loop body at least once is known as a _____________ loop.

Accepted Answer

The answer of A loop that always executes the loop...

Question 14

In a compound logical and &&) expression, the evaluation of the expression stops once one of the terms of the expression is false. This is known as ______________ evaluation.

Accepted Answer

The answer of In a compound logical and &&) expression,...

Question 15

What is the value of x after the following statements?
Int x, y, z;
Y = 10;
Z = 3;
X = y * z + 3;

Accepted Answer

A)   Garbage
B)   60
C)   30
D)   33

Question 16

Given the following code fragment, what is the output?
Int x=5;
If x > 5)
Cout << "x is bigger than 5. ";
Cout <<"That is all. ";
Cout << "Goodbye
";

Accepted Answer

A)   x is bigger than 5. That is all
B)   x is bigger than 5
C)   That is all. Goodbye
D)   Goodbye

Question 17

Another way to write the value 3452211903 is

Accepted Answer

A)   3.452211903e09
B)   3.452211903e-09
C)   3.452211903x09
D)   3452211903e09

Question 18

The _______ keyword in C++11 determines the type of a variable based on the data type that the variable is set to.

Accepted Answer

The answer of The _______ keyword in C++11 determines the...

Question 19

What is the advantage of the C++11 integer data types over the old data types?

Accepted Answer

A)   Number of bits allocated changes dynamically as needed
B)   No advantage, just new names
C)   Specifies exact size in bits
D)   Higher precision

Question 20

When must we use braces to define the body of a contitional expression? ______________

Accepted Answer

The answer of When must we use braces to define...

Exam 2: C++ Basics

Given the following code fragment, what is the final value of y? Int x, y; X = -1; Y = 0; Whilex <= 3) { Y += 2; X += 1; }

What is the value of x after the following statements? Int x; X = 15/4;

Which of the following is a valid identifier?

Given the following code fragment, which of the following expressions is always true? Int x; Cin >> x;

What is the value of x after the following statements? Int x; X = 0; X = x + 30;

What is the final value of x after the following fragment of code executes? Int x=0; Do { X++; }whilex > 0) ;

The body of a while loop may never execute.

Variable names may begin with a number.

The stream that is used for input from the keyboard is called ___________.

Which of the following statements is NOT legal?

The opposite of x >3 && x < 10) is x < 3 && x > 10)

What is the output of the following code? Cout << "This is a \\" << endl;

A loop that always executes the loop body at least once is known as a _____________ loop.

In a compound logical and &&) expression, the evaluation of the expression stops once one of the terms of the expression is false. This is known as ______________ evaluation.

What is the value of x after the following statements? Int x, y, z; Y = 10; Z = 3; X = y * z + 3;

Given the following code fragment, what is the output? Int x=5; If x > 5) Cout << "x is bigger than 5. "; Cout <<"That is all. "; Cout << "Goodbye\n";

Another way to write the value 3452211903 is

The _______ keyword in C++11 determines the type of a variable based on the data type that the variable is set to.

What is the advantage of the C++11 integer data types over the old data types?

When must we use braces to define the body of a contitional expression? ______________