c++ - fstream is not working in Visual Studio 2017 even after including the std namespace

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I am trying out basic file handling in c++ using visual studio 2017, can't seem to use the class fstream

error - Severity Code Description Project File Line Suppression State Error C2065 'myfile': undeclared identifier CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 11
Error C2065 'ofstream': undeclared identifier CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 8
Error C2146 syntax error: missing ';' before identifier 'myfile' CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 8
Error C2065 'myfile': undeclared identifier CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 8
Error C2065 'myfile': undeclared identifier CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 9
Error C2228 left of '.open' must have class/struct/union CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 9
Error C2065 'myfile': undeclared identifier CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 10
Error C2228 left of '.close' must have class/struct/union CSV C:\Users\User\source\repos\CSV\CSV\CSV.cpp 11

what should I do ?

Why are you guys answering in the comments section? This is not a chat room or a message board/forum. Thanks. – Lightness Races in Orbit Mar 3, 2018 at 15:24 It's a close call, when the answer is of the type that can be found at the beginning of any tutorial, and its of marginal use to other readers, a quick comment will at times suffice. – David C. Rankin Mar 3, 2018 at 15:42 @PranavLokhande: This other answer should help: What's the use for “stdafx.h” in Visual Studio? . Note that precompiled headers are optional and you can decide not to use them if you wish. – Blastfurnace Mar 3, 2018 at 17:28

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