vb6 - 为什么long l = 1000 * 60会导致溢出？

Question

我有这一行:

    Dim l&
    l = 1000 * 60 '1 min

它会引发溢出错误。

这是为什么？

Answer 1

Vb 的帮助说:

You attempt to use a number in a calculation, and that number is coerced into an integer, but the result is larger than an integer. For example:

Dim x As Long
x = 2000 * 365   ' Error: Overflow

To work around this situation, type the number, like this:

Dim x As Long
x = CLng(2000) * 365