April 5, 2002

1
April 5, 2002
2
Exam 3

• April 10
• files, arrays, strings, classes
• practice exams are up
• review on Monday

3
Random numbers

• use the rand function from stdlib.h
• int rand() returns an integer from 0 to RAND_MAX
  (a big number)
• the sequence you get is always the same
• use to get numbers from 1 to 6
• dieValue 1 rand() 6

4
randomizing dice

• include lttime.hgt
• at the top of your main function
• srand( time( NULL))
• See testFns for an example

5
yahtzee

• NOW DUE April 12
• you may write a single player game (since my
  Player class doesn't seem to be getting written)
• input and output format are up to you this time
• please explain the input required of the user in
  your readme

6
static members

• functions and variables
• belong to the class as a whole rather than a
  specific instance
• use them with className in front of the name
  (object reference will also work)

7
Common Programming Errors

• Not defining a function as a member of a class
• Referencing a private attribute of a class
• Missing header files
• Missing on class definition

8
Common Programming Errors

• Mismatch in signature between header and function
  definitions
• Prefixing a class function call
• obj.function()
• don't use class name except for static functions
• trying to access instance variables from a static
  function