RosettaCodeData/Task/Least-common-multiple/Modula-2/least-common-multiple.mod2

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MODULE LeastCommonMultiple;
FROM STextIO IMPORT
WriteString, WriteLn;
FROM SWholeIO IMPORT
WriteInt;
PROCEDURE GCD(M, N: INTEGER): INTEGER;
VAR
Tmp: INTEGER;
BEGIN
WHILE M <> 0 DO
Tmp := M;
M := N MOD M;
N := Tmp;
END;
RETURN N;
END GCD;
PROCEDURE LCM(M, N: INTEGER): INTEGER;
BEGIN
RETURN M / GCD(M, N) * N;
END LCM;
BEGIN
WriteString("LCM(35, 21) = ");
WriteInt(LCM(35, 21), 1);
WriteLn;
END LeastCommonMultiple.