这需要知道年月日输入的格式例：****/**/**i3=if(48<=char(mid(f3,1,1)) and char(mid(f3,1,1))<=57 and 48<=char(mid(f3,2,1)) and char(mid(f3,2,1))<=57 and 48<=char(mid(f3,3,1)) and char(mid(f3,3,1))<=57 and 48<=char(mid(f3,4,1)) and char(mid(f3,4,1))<=57 and mid(f3,1,5)="/"and .......对于第i位，若必须为数字，则48<=char(mid(f3,i,1)) a...
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