[CSNOBOL4] Decimal to Binary

Okay, I think this is the last of the solutions to Binary Digits. Thie one's in CSNOBOL4. Kudos to Phil Budne for maintaining and expanding this amazing programming language.

The code below, like all the ones before it, is recursive.

        DEFINE('BIN(N,STR)')              :(BIN_END)
BIN     EQ(N,0)                           :S(NZERO)
        BIN = BIN(N / 2, REMDR(N,2) STR)  :S(RETURN)
NZERO   BIN = EQ(SIZE(STR),0) '0'         :S(RETURN)
        BIN = STR                         :(RETURN)
BIN_END

        OUTPUT = BIN(0)
        OUTPUT = BIN(5)
        OUTPUT = BIN(50)
        OUTPUT = BIN(9000)
END

© Copyright Bruce M. Axtens, 2015