• Announce
  • Quiz Today
  • Exam Wednesday
    • Select Questions from old Tests
    • In-class Review on Monday (Q&A)
    • Old Exams On-Line

• Stream Iteration: Counting Words
  wordcount.cpp

• Input File Streams
  • #include
  • ifstream streamname
  • streamname.open(filename)
  • streamname >> variable
  wordcount2.cpp

• UNIX File Streams stdin, stdout
  • Redirection
    • program < infilename
    • program > outfilename
    • program < infilename > outfilename
  • Pipes
    • program1 | program2
    • program1 | program2 | program3
  • Filters

• Extrema, Statistics
  • stats1.cpp: Initialize with contrary values
  • stats2.cpp: Initialize with real data

• Type Casting (coercion)
  • Change one type to another
  • Only defined where it makes sense
  • Several different forms exist
    • E.g., changing int to double
    • double(n)
    • (double) n

• Using Reference Parameters

  stats3.cpp

  stats4.cpp

• Text Processing Example
  • Design Issues
  • Moving Functionality to Functions
  • Use of Reference Parameters

  format.cpp

  formatwatch.cpp

• More Reference Parameters (tricky)

  ref.cpp

Chap 7. Class Interfaces, Design, and Implementation

• Switch Statement

  switch ( expression )

  {

  case constant1:

  statement list;

  break;

  case constant2:

  statement list;

  break;

  ...

  default:

  statement list;

  }

• Example Using the Switch Statement
  • Tallies (car occupancy)