Delphi: Delphi imitation of the Windows calculator, calculator typing from right to left, from the interface, it seems that it is the same with the Windows calculator, in order to demonstrate enter characters from right to left, wrote this calculation functions for demonstration , a data entry window in the calculator, you can see the input data from the right. Associated source code shows: operator = (Emp, add, sub, mul, divid) define empty, add, subtract, multiply, divide, Operate1: Operator = emp once the user presses on the record operators, Pointed: Boolean = False role is to define whether a decimal point, Delphi StrToFloat detailed description of the function or instance see "Delphi programming Dictionary" basics section, which has a detailed description of the syntax and the most practical application examples for all objects.

Code\delphi\pudn\upandload\DATA\Delphi_277212\Delphi_277212\rd.txt
....\......\....\.........\....\.............\.............\Delphi 从右向左输入的计算器\Project1.cfg
....\......\....\.........\....\.............\.............\...........................\Unit1.dcu
....\......\....\.........\....\.............\.............\...........................\Unit1.ddp
....\......\....\.........\....\.............\.............\...........................\Unit1.dfm
....\......\....\.........\....\.............\.............\...........................\Project1.dof
....\......\....\.........\....\.............\.............\...........................\Project1.dpr
....\......\....\.........\....\.............\.............\...........................\Project1.drc
....\......\....\.........\....\.............\.............\...........................\Project1.dsk
....\......\....\.........\....\.............\.............\...........................\Project1.map
....\......\....\.........\....\.............\.............\...........................\Unit1.pas
....\......\....\.........\....\.............\.............\...........................\Project1.res
....\......\....\.........\....\.............\.............\Delphi 从右向左输入的计算器

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