Source of datatypes_simple.cpp

Structures and functions

  1: //datatypes_simple.cpp
  2: //C++ code examples illustrating simple data types

  4: //Some declarations of variables of simple types:
  5: int n;
  6: int numberOfGuesses;
  7: char ch;
  8: char firstLetter;
  9: float costPerUnit;
 10: bool isValid;
 11: bool everythingOK;

 13: //Some initializations of variables of simple types:
 14: int sum = 0;
 15: int maxNumberOfGuesses = 10;
 16: char topGrade = 'A';
 17: char period = '.';
 18: char tabChar = '\t';
 19: float balance = 0.0;
 20: double smallValue = 1.23e-20;
 21: bool finished = false;

 23: //Some definitions of named constants:
 24: const float PI = 3.14159;
 25: const double TAX_RATE = 0.15;
 26: const int SIZE = 100;

 28: //Simple typedefs can enhance code readbility
 29: typedef int BowlingScore;
 30: typedef double Dimension;
 31: BowlingScore myScore, yourScore;
 32: Dimension length, width, height;