c# in time for precision control. and demonstrated a try () catch () and (if)) else (Part of the procedure in the gap on efficiency

ConsoleApplication3
...................\ConsoleApplication3
...................\...................\bin
...................\...................\...\Debug
...................\...................\ConsoleApplication3.csproj
...................\...................\ConsoleApplication3.csproj.user
...................\...................\obj
...................\...................\...\ConsoleApplication3.csproj.FileList.txt
...................\...................\...\Debug
...................\...................\Program.cs
...................\...................\Properties
...................\...................\..........\AssemblyInfo.cs
...................\ConsoleApplication3.sln

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