Saturday, 31 December 2011

Repetition Essentials




  • Loop
    •  Group of instructions computer executes repeatedly while some condition remains true
  •  Counter-controlled repetition
    •  Definite repetition: know how many times loop will execute
    •  Control variable used to count repetitions
  •  Sentinel-controlled repetition
    •  Indefinite repetition
    •  Used when number of repetitions not known
    •  Sentinel value indicates "end of data"

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