C-Kurs 2009/Vortrag01

Einführung

Vortragende: Sebastian D. <dyroff cs.tu-berlin.de>

Themen

• Organisatorisches
• Konzept von C
  • Syntax
  • Operatoren
    •  ! ~
    • + - * / % ^ | & || && . [->]
    • ++ -- (++x vs x++)
    • << >>
    • += -= *= /= %= |= &= != ~= ^=
    • <<= >>=
    • Hirarchie
      • ++x*3 ?
      • TODO Weitere Beispiele! (andere Resultate, andere Parameter)

// Von Sebastian P.
#include <stdio.h>
int
main(void) {
   const int APPLE = 1;
   const int PEAR = 2;
   const int MILK = 4;
   const int FRUIT_MASK = APPLE | PEAR;
   const int meal = MILK | PEAR;
   /* Test: Does the meal contain fruits? */
   printf("%d\n", meal & FRUIT_MASK != 0); /* 0, precendence fail */
   printf("%d\n", (meal & FRUIT_MASK) != 0); /* 1, as expected */
   return 0;
}

• • • x ? x : x

• Hello World
• Compilereinführung