CSE 271: Homework 2

Assigned: 26 January 2007
Due: 31 January 2007, in class, on paper.

1. Which of the following are invalid variable names? Why?
   1. Int
   2. Printf
   3. floating
   4. ReInitialize
   5. char
   6. Xx
   7. _1312
   8. _
   9. 6_05
   10. alpha-beta-routine
   11. A$
   12. $B

2. Write a program to evaluate the polynomial: 2x³ - 5x² + 6
   for any value of x, which should be of type float.

3. The factorial of an integer n, written n!, is the product of the consecutive integegers 1 through n. For example, 5 factorial is calculated as
   5! = 5 x 4 x 3 x 2 x 1 = 120
   Write a program that generates the appropriate output (similar to that above), when looping through the first 10 factorials.