Binary digits

Binary digits is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

The task is to output the set of binary digits for a given non negative decimal integer.

The decimal value 5, should produce an output of 101 The decimal value 50 should produce an out of 110010 The decimal value 9000 should produce an output of 10001100101000

The results can be achieved using builtin radix functions within the language, if these are available, or a user defined function can be utilized. The output produced should consist just of the binary digits. These should be no whitespace, radix or sign markers in the produced output, and superfluous leading zeros should not appear in the results.

ZX Spectrum Basic

<lang basic>10 LET n=5: GO SUB 1000: PRINT s$ 20 LET n=50: GO SUB 1000: PRINT s$ 30 LET n=9000: GO SUB 1000: PRINT s$ 999 STOP 1000 REM convert to binary 1010 LET t=n: REM temporary variable 1020 LET s$="": REM this will contain our binary digits 1030 LET sf=0: REM output has not started yet 1040 FOR l=126 TO 1 STEP -1 1050 LET d$="0": REM assume next digit is zero 1060 IF t>=(2^l) THEN LET d$="1": LET t=t-(2^l): LET sf=1 1070 IF (sf <> 0) THEN LET s$=s$+d$ 1080 NEXT l 1090 RETURN</lang>