• Announce
  • Assignment #5
  • Random Quiz #6

Chap 7. Class Design and Implementation via Simulation

• Initializer Lists - Syntax

  ClassName::ClassName()

  :

  myVar1(argument),

  myVar2(argument),

  ...

  myVarN(argument)

  {// begin constructor body ...

• Structs
  • Similarity to Class
    • All Public, No Private
    • Can Have Member Functions
  • An Aggregate of Dissimilar Types
  • Example (without member functions)

  struct Student

  {

  string name;

  int height; // height in inches

  double weight; // weight in pounds

  string dob; // date of birth mm/dd/yy

  }

• Concepts
  • Random Access
  • Sequential Access
  • Arrays, Vectors

• A Counting Problem

  gradefreq1.cc

  gradefreq2.cc

  gradefreq3.cc

• Vector Vocabulary
  • Homogeneous Collection (Aggregate)
  • N cells/elements
  • index/subscript (0, 1, ..., N-1)
  • always start at 0
  • last always at N-1

• Vector Creation and Use
  
  

  Vector<int> num(6);

  +--+--+--+--+--+--+

  | ?| ?| ?| ?| ?| ?|

  +--+--+--+--+--+--+

  --0--1--2--3--4--5-

  
  
  
  

  num[1] = 21; num[5] = 13;

  +--+--+--+--+--+--+

  | ?|21| ?| ?| ?|13|

  +--+--+--+--+--+--+

  --0--1--2--3--4--5-

  
  

  
  

  int k;

  for (k=2; k<6; k++) num[k] = k*k;

  +--+--+--+--+--+--+

  | ?|21| 4| 9|16|25|

  +--+--+--+--+--+--+

  
  

  
  

  int j;

  for (j=0; j<6; j++) cout << num[k] << " ";

  
  

  ? 21 4 9 16 25