RosettaCodeData/Task/Strip-comments-from-a-string/QBasic/strip-comments-from-a-strin...

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SUB stripComment (s$, commentMarkers$)
IF s$ = "" THEN RETURN
i = INSTR(s$, commentMarkers$)
IF i > 0 THEN
s$ = LEFT$(s$, i - 1)
s$ = LTRIM$((RTRIM$(s$))) '' removes both leading and trailing whitespace
END IF
END SUB
DIM s$(1 TO 4)
s$(1) = "apples, pears # and bananas"
s$(2) = "apples, pears ; and bananas"
s$(3) = "# this is a comment"
s$(4) = " # this is a comment with leading whitespace"
FOR i = 1 TO 4
CALL stripComment(s$(i), "#;")
PRINT s$(i), " => Length ="; LEN(s$(i))
NEXT i