[填空题] 下面的程序是找出两个正整数a和b,使得a<b、a+ b=99、a和b的最大公约数是3的倍数,并统计满足条件数对的个数。Option ExplicitDim a As Integer, b As Integer, n As Integer, c As IntegerPrivate Function Gcd (ByVal a As Integer, Byval b As Integer) As Integer doc=a Mod b: a=b=c Loop 【13】 Gcd=aEnd F