1. Casting is the process that occurs when a. a number is converted to a string b. a floating-point number is displayed as a fixed-point number c. a string is converted to a number d. one data type is converted to another data type

2. Code Example 6-1 float counter = 0.0; while (counter != .9) { cout << counter << " "; counter += .1; } (Refer to Code Example 6-1.) How could you modify this code so only the numbers from 0 to 0.8 are displayed at the console? a. a and c only b. Cast the counter variable to an integer within the while loop c. Round the counter variable to one decimal point within the while loop d. Change the condition in the while loop to test that counter is less than .85 e. All of the above

3. Code Example 6-1 float counter = 0.0; while (counter != .9) { cout << counter << " "; counter += .1; } (Refer to Code Example 6-1.) What happens when this code is executed? a. The program displays the numbers from 0 to 0.8 in increments of .1 on the console. b. The program displays the numbers from .1 to 0.9 in increments of .1 on the console. c. The program displays the numbers from 0 to 0.9 in increments of .1 on the console. d. The program enters an infinite loop.

4. If you want the compiler to infer the data type of a variable based on its initial value, you must a. define and initialize the variable in one statement b. store the initial value in another variable c. code the auto keyword instead of a data type d. all of the above e. a and c only

5. When a data type is promoted to another type a. the new type may not be wide enough to hold the original value and data may be lost b. an error may occur c. the new type is always wide enough to hold the original value d. both a and b

6. When you use a range-based for loop with a vector, you a. can avoid out of bounds access b. can process a specified range of elements c. must still use the subscript operator d. must still use a counter variable

7. Which of the following is a difference between a variable and a constant? a. The value of a variable can change as a program executes, but the value of a constant cant. b. Any letters in the name of a variable must be lowercase, but any letters in the name of a constant must be uppercase. c. You use the var keyword to identify a variable, but you use the const keyword to identify a constant. d. All of the above

8. Which of the following is a difference between the float and double data types? a. float numbers are expressed using scientific notation and double numbers are expressed using fixed-point notation b. float contains a floating-point number and double contains a decimal number c. float can have up to 7 significant digits and double can have up to 16 d. float can provide only for positive numbers and double can provide for both positive and negative

9. Which of the following statements is not true about a vector? a. Each element of a vector must have the same data type. b. The indexes for the elements of a vector start at 1. c. It is a member of the std namespace. d. It is one of the containers in the Standard Template Library.