becoenes a C4+ statement e curly bracket d. period 2. Any expression that is terminated by.a a. colon 3. If b is an integer and d is a double-precision number, the evaluation of the expression b d is a(o) a. integer b. float c. real d, double-precision 4. aum sum 10 can be rewritten using as a shorteut operator e++ operator appears before a variable, it is called a(n) increment operator. 5. When the appears a. leading b. prefix c. ordered d. postfix 6. Ifn is initialized to the value 5, theexpression--n changes the value ofn to- b. 4 d. 6 7. The cin object is used to enter data into a program while it is a. compiling . interpreting d. loading b. running 8. When a cout statement prints a string that tells the person at the terminal what should be typed, the output string used in this manner is called a(n) a. prompt b. checkpoint c. interrupt d. pause 9. The const qualifier specifies that the declared identifier is read-only after it is a. defined b. initialized c. edited d. validated 10. Usingletters is customary in C++ to make const identifiers easy to identify. a. lowercase b. italic c. bold d. uppercase 11. The extraction operator used with cin is - C. 12. One of the most common C++ programming errors is forgetting to used in an expression. a. assign or initialize b. read in values for all variables that are c. compute erize itir programming work: The circumference, C, of a circle is given by the formula C 2 pi'r, where pi is the constant 3.1416 and r is the radius of the circle. Using this formula, write a C++ program to calculate the circumference of a circle that has r radius as input. Output the circumference