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Chap 6. Sequential Access: Streams & Iterators

• Stream Iteration: Counting Words
  wordcount.cc

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

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

• Extrema, Statistics

  stats1.cc

  stats2.cc

  Initialize with real data

• Word Stream Iterator Class
  • Puts reading of items from a file into class context
  • Hide I/O details
  • Design member functions to use in for loops
    • First()
    • IsDone()
    • Next()
  • countw3.cc

• Reference Parameters
  • Arguments NOT copied
  • (Value parameters are copied)

  stats3.cc

  stats4.cc

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

  format.cc

  formatwatch.cc