91Ó°ÊÓ

Assume that the following variables are defined: int age; double pay; char section; Write a single cin statement that will read input into each of these variables.

Assume a program has the following variable definitions: int units; float mass; double weight; and the following statement: weight = mass * units; Which automatic data type conversion will take place? A) mass is demoted to an int, units remains an int, and the result of mass * units is an int. B) units is promoted to a float, mass remains a float, and the result of mass * units is a float. C) units is promoted to a float, mass remains a float, and the result of mass * units is a double.

Assume a program has the following variable definitions: int a, b = 2; float c = 4.2; and the following statement: a = b * c; What value will be stored in a? A) 8.4 B) 8 C) 0 D) None of the above

The ________ library function returns the cosine of an angle.

The _______ library function returns the sine of an angle.

The __________ library function returns the value of a number raised to a power.

A retail store grants its customers a maximum amount of credit. Each customer's available credit is his or her maximum amount of credit minus the amount of credit used. Write a pseudocode algorithm for a program that asks for a customer's maximum amount of credit and amount of credit used. The program should then display the customer's available credit.

Write a pseudocode algorithm for a program that calculates the total of a retail sale. The program should ask for the amount of the sale and the sales tax rate. The sales tax rate should be entered as a floating-point number. For example, if the sales tax rate is 6 percent, the user should enter \(0.06 .\) The program should display the amount of sales tax and the total of the sale. After you write the pseudocode algorithm, convert it to a complete \(\mathrm{C}_{++}\) program.