Unterschied const int und int???

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liebe forumgemeinde!

kann mir jemand den unterschied zwischen z.b.

const int test = 1;

und

int test = 1;

erklären?

oder kann ich in meinem fall beides benutzen. benutze ich bei eingängen und ausgängen immer das const int und bei variablen nur int???

bitte um hilfe!! :o

werte die sich nicht ändern werden mit const angegeben. hier würden sich auch einfache #defines anbieten.

code: [select]

#define led   5

oder

const int led = 5;



http://openbook.galileo-press.de/c_von_a_bis_z/009_c_funktionen_010.htm#ix6bc5a72397a468d7d0c44b1236ded230


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