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#2
wp2319572013-08-27 10:26
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msgbox sn=n*(n+1) /2


private sub command1_click()
L = 0
for i = 1 to 100
L= L + i
next i
end sub
L = 0
for i = 1 to 100
L= L + i
next i
end sub

[ 本帖最后由 tonoy 于 2013-8-28 19:26 编辑 ]