Chapter 2

Suppose \(\mathbf{x}, \mathbf{y},\) and \(\mathbf{z}\) are int variables and \(\mathbf{w}\) and \(\mathbf{t}\) are double variables. What value is assigned to each of these variables after the last statement executes? x = 23; y = 35; x = x + y / 4 - 3; z = x % 3; w = 28 / 3 + 6.5 * 2; t = x / 4.0 + 15 % 4 - 3.5;

Suppose \(\mathbf{x}, \mathbf{y},\) and \(\mathbf{z}\) are int variables and \(\mathbf{x}=2, \mathbf{y}=5,\) and \(\mathbf{z}=6 .\) What is the output of each of the following statements? a. cout << "x = " << x << ", y = " << y << ", z = " << z << endl; b. cout << "x + y = " << x + y << endl; c. cout << "Sum of " << x << " and " << z << " is " << x + z << endl; d. cout << "z / x = " << z / x << endl; e. cout << "2 times " << x << " = " << 2 *x << endl;

What is the output of the following statements? Suppose a and b are int variables, \(c\) is a double variable, and \(a=13, b=5,\) and \(c=17.5\) a. cout << a + b – c << endl; b. cout << 15 / 2 + c << endl; c. cout << a / static_cast(b) + 2 * c << endl; d. cout << 14 % 3 + 6.3 + b / a << endl; e. cout << static_cast(c) % 5 + a – b << endl; f. cout << 13.5 / 2 + 4.0 * 3.5 + 18 << endl;

Which of the following are correct \(\mathrm{C}++\) statements? a. cout \(<<\) "Hello there!" \(<<\) endl b. cout \(<<\) "Hello"; \(<<\) " There! \("<<\) endl c. cout \(<<\) "Hello" \(<<\) " There! \("<<\) endl d. cout \(<<\) 'Hello There!' \(<<\) endl

Give meaningful identifiers for the following variables: a. A variable to store the first name of a student. b. A variable to store the discounted price of an item. c. A$variable to store the number of juice bottles. d. A variable to store the number of miles traveled. e. A variable to store the highest test score.

Write C++ statements to do the following: a. Declare int variable num1 and num2. b. Prompt the user to input two numbers. c. Input the first number in num1 and the second number in num2. d. Output num1, num2, and 2 times num1 minus num2. Your output must identify each number and the expression.

The following program has syntax mistakes. Correct them. On each successive line, assume that any preceding error has been corrected. const char = STAR = '*' const int PRIME = 71; int main { int count, sum; double x; count = 1; sum = count + PRIME; x := 25.67; newNum = count * ONE + 2; sum + count = sum; x = x + sum * COUNT; cout << " count = " << count << ", sum = " << sum << ", PRIME = " << Prime << endl; }

include using namespace s… # The following program has syntax errors. Correct them. On each successive line, assume that any preceding error has been corrected. #include using namespace std; int main() { int temp; string first; cout << "Enter first name: ; cin >> first cout << endl; cout << "Enter last name: ; cin >> last; cout << endl; cout << "Enter today's temperature: "; cin >> temperature; cout << endl; cout << first << " " << last << today's temperature is: "; << temperature << endl; return 0;

What action must be taken before a variable can be used in a program?

c. \( d. ! e. None of these. # Preprocessor directives begin with which of the following symbols: a. * b. # c. \) d. ! e. None of these.