Simple calculator, only realizing the 0-9 arithmetic for help-CodePudding

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Simple calculator, only realizing the 0-9 arithmetic for help

Time：10-10

Dobend=txt_show. Text
The Select Case stroperator

The Case "+"
Txt_show. Text=dobfrist + dobend
Case ", "
Txt_show. Text=dobfrist - dobend
Case '*'
Txt_show. Text=dobfrist * dobend
Case ""
Txt_show. Text=dobfrist \ dobend

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