RosettaCodeData/Task/Five-weekends/Simula/five-weekends.simula

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! TRANSLATION OF FREEBASIC VERSION ;
BEGIN
INTEGER PROCEDURE WD(M, D, Y); INTEGER M, D, Y;
BEGIN
! ZELLERISH
! 0 = SUNDAY, 1 = MONDAY, 2 = TUESDAY, 3 = WEDNESDAY
! 4 = THURSDAY, 5 = FRIDAY, 6 = SATURDAY
;
IF M < 3 THEN ! IF M = 1 OR M = 2 THEN ;
BEGIN
M := M + 12;
Y := Y - 1
END;
WD := MOD(Y + (Y // 4)
- (Y // 100)
+ (Y // 400)
+ D + ((153 * M + 8) // 5), 7)
END WD;
! ------=< MAIN >=------
! ONLY MONTHS WITH 31 DAY CAN HAVE FIVE WEEKENDS
! THESE MONTHS ARE: JANUARY, MARCH, MAY, JULY, AUGUST, OCTOBER, DECEMBER
! IN NR: 1, 3, 5, 7, 8, 10, 12
! THE 1E DAY NEEDS TO BE ON A FRIDAY (= 5)
;
TEXT PROCEDURE MONTHNAMES(M); INTEGER M;
MONTHNAMES :- IF M = 1 THEN "JANUARY"
ELSE IF M = 2 THEN "FEBRUARY"
ELSE IF M = 3 THEN "MARCH"
ELSE IF M = 4 THEN "APRIL"
ELSE IF M = 5 THEN "MAY"
ELSE IF M = 6 THEN "JUNE"
ELSE IF M = 7 THEN "JULY"
ELSE IF M = 8 THEN "AUGUST"
ELSE IF M = 9 THEN "SEPTEMBER"
ELSE IF M = 10 THEN "OCTOBER"
ELSE IF M = 11 THEN "NOVEMBER"
ELSE IF M = 12 THEN "DECEMBER"
ELSE NOTEXT;
INTEGER M, YR, TOTAL, I, J;
INTEGER ARRAY YR_WITHOUT(1:200);
TEXT ANSWER;
FOR YR := 1900 STEP 1 UNTIL 2100 DO ! GREGORIAN CALENDAR ;
BEGIN
ANSWER :- NOTEXT;
FOR M := 1 STEP 2 UNTIL 12 DO
BEGIN
IF M = 9 THEN M := 8;
IF WD(M, 1, YR) = 5 THEN
BEGIN
ANSWER :- ANSWER & MONTHNAMES(M) & ", ";
TOTAL := TOTAL + 1
END
END;
IF ANSWER =/= NOTEXT THEN
BEGIN
OUTIMAGE;
OUTINT(YR, 4); OUTTEXT(" | ");
OUTTEXT(ANSWER.SUB(1, ANSWER.LENGTH - 2)) ! GET RID OF EXTRA " ," ;
END
ELSE
BEGIN
I := I + 1;
YR_WITHOUT(I) := YR
END
END;
OUTIMAGE;
OUTTEXT("NR OF MONTH FOR 1900 TO 2100 THAT HAS FIVE WEEKENDS ");
OUTINT(TOTAL, 0);
OUTIMAGE;
OUTIMAGE;
OUTINT(I, 0);
OUTTEXT(" YEARS DON'T HAVE MONTHS WITH FIVE WEEKENDS");
OUTIMAGE;
FOR J := 1 STEP 1 UNTIL I DO
BEGIN
OUTINT(YR_WITHOUT(J), 0); OUTCHAR(' ');
IF MOD(J, 8) = 0 THEN OUTIMAGE
END;
OUTIMAGE
END.