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UTSA Values of Results Calculus Questions

UTSA Values of Results Calculus Questions

UTSA Values of Results Calculus Questions

Question Description

I’m working on a c++ multi-part question and need an explanation and answer to help me learn.

Question 1

Suppose a = 5. After the execution of the statement ++a; the value of a is 6.

True or False

Question 2

Suppose we declare a variable sum as an int. The statement “sum += 7;” is equivalent to the statement “sum = sum + 7;”.

True or False

Question 3 

In the following code what is the value of result

int result = 9;

result = result / 2;

Question 4

In the following code what is the value of result

int result = 10;

result = result / 2 + 2;

Question 5

The value ‘$’ can be stored in a char variable?

True or False

Question 6

In the following code what is the value of result

int result = 20;

result = result % 6;

Question 7

The expression

static_cast<int>(9.9)

evaluates to ____.

Question 8

The length of the string “computer science” is ____.

Question 9

The number of input data extracted by cin and >> depends on the number of variables appearing in the cin statement.

True or False

Question 10

You can use the function getline to read a string containing blanks.

True or False

Question 11

Suppose that x = 55.68,     y = 476.859,    and z = 23.8216.

What is the output of the following statements

cout << fixed << showpoint;

cout << setprecision(2);

cout << x << ‘ ‘ << y << ‘ ‘ << z << endl;

Question 12

A control structure alters the normal sequential flow of execution in a program.

True or False

Question 13

The expression (x >= 0 && x <= 100) evaluates to false if either x < 0 or x >= 100.

True or False

Question 14

What does <= mean?

Question 15

Suppose x is 5 and y is 7. Choose the value of the following expression:

(x != 7) && (x <= y)

Question 16

What is the output of the following C++ code?

int x = 35;

int y = 45;

int z;

if (x > y)

 z = x + y;

else

 z = y – x;

cout << x << ” ” << y << ” ” << z << endl;

Question 17

What is the value of x after the following statements execute?

int x;

x = (5 <= 3 && ‘A’ < ‘F’) ? 3 : 4

Question 18

What is the output of the following code?

char lastInitial = ‘S’;

switch (lastInitial)

{

case ‘A’:

 cout << “section 1” <<endl;

 break;

case ‘B’:

 cout << “section 2” <<endl;

 break;

case ‘C’:

 cout << “section 3” <<endl;

 break;

case ‘D’:

 cout << “section 4” <<endl;

 break;

default:

 cout << “section 5” <<endl;

}

Question 19

Consider the following code:

string studentName;

cout << “Please enter your name: ” << endl;

cin >> studentName;

cout << “Your name is ” << studentName;

Assume the user types in “Fred Flintstone”. What would the output be in the last line

Question 20

Consider the following code:

bool myFlag = true;

string Hello = “greetings”;

if(myFlag)

{

   cout << Hello;

}

else

{

   cout << “Hello”;

}

What is the output after the code executes?

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