types.cpp

#include<iostream>

 // template: check "generic programming c++" (google it at the meanwhile)
 template<class T>
 class MyClass{};

int main() {
  // suffix U explicit unsigned
  auto a = 3U;
  // suffix L explicit long
  auto b = 3L;
  // suffix LL explicit long long
  // suffix F explicit float

  std::cout << "a: " << a << " " << "b: " << b << std::endl;

  // sizes are 'implementation defined' (google it)
  std::cout <<
	"size of bool: " << sizeof(bool) <<
	" size of char: " << sizeof(char) <<
	" size of short: " << sizeof(short) <<
	" size of int: " << sizeof(int) <<
	" size of long: " << sizeof(long) <<
	" size of long long: " << sizeof(long long) <<
	std::endl;

  // volatile is needed if you are reading from a spot in memory that,
  // say, a completely separate process/device/whatever may write to
  // ref: http://stackoverflow.com/a/72617/1556106
  volatile int c = -1;

  // references
  auto &d = a;
  d = 1;
  std::cout << "a: " << a << " d: " << d << std::endl;

  // decltype: declaration type specifier: decltype(expr) is the declared type of expr
  // no example yet

  // rvalues and lvalues: Depends con "had identity" and if is "movable"
  // lifetime: automatic, static, free store, temporary, thread-local
  // type aliases
  using Pchar = char*;
  using PF = int(*)(int);

  typedef short shico;
  shico e = 1;
  std::cout << "e: " <<  e << std::endl;

  return 0;
}