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10 - 10
012 - 10 (octal, (0*8^2) + (1*8^1) + (2*8^1)
0xA - 10 (Hexa, 1-9, A-F = 10-15, po tym mnozymy przez 16 np.
0x40 = (4*16^1)+(0*16^0)
0x123 = (1*16^2) + (2*16^1) + (3* 16^3)
0b1010 - (binary, potegi 2, 128-64-32-16-8-4-2-1 np.
0b11100 = 28
operatory logiczne
! - zaprzecza, true na false, false na true
&& AND (wszystkie musze byc true)
true && false = false
false && true = false
false && false = false
true && true = true
|| OR (minimum jedno true)
true || false = true
false || true = true
false || false = false
true || true = true
!= - nie rowna sie
== rowna sie
< mniejsze od
> wieksze od
<= mniejsze badz rowne
>= wieksze badz rowne
Operatory ogolne
+ dodaj
- odejmij
* pomnoz
/ podziel
+= dodaj i przypisz
-= odejmij i przypisz
*= pomnoz i przypisz
/= podziel i przypisz
Syntax dla ? :
on zwraca wiec musi byc gdzies przypisany albo np w Sysout. Nie jako samodzielny zapis
Pytanie ? true : false - w true false mozna dac kolejne pytania np
Pytanie ? Pytanie ? true : false : Pytanie ? true : false
operatory bitowe (podobnie jak true false)
& AND (wszystkie musze byc true)
1 & 0 = 0
0 & 1 = 0
0 & 0 = 0
1 & 1 = 1
| OR (minimum jedno true)
1 | 0 = 1
0 | 1 = 1
0 | 0 = 0
1 | 1 = 1
^ XOR (kopiuje jezeli jest w jednej ale nie w 2)
1 ^ 0 = 1
0 ^ 1 = 1
0 ^ 0 = 0
1 ^ 1 = 0
~ negacja
~0b1100 = 0b0011
0b1100 = 12
0b1100 = -13 (bo zmiana znaku w formie dwojkowej)
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