RosettaCodeData/Task/Binary-digits/BASIC/binary-digits-3.basic

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FOR num% = 0 TO 16
PRINT FN_tobase(num%, 2, 0)
NEXT
END
REM Convert N% to string in base B% with minimum M% digits:
DEF FN_tobase(N%,B%,M%)
LOCAL D%,A$
REPEAT
D% = N%MODB%
N% DIV= B%
IF D%<0 D% += B%:N% -= 1
A$ = CHR$(48 + D% - 7*(D%>9)) + A$
M% -= 1
UNTIL (N%=FALSE OR N%=TRUE) AND M%<=0
=A$