Question 135133 in Visual Studio Code Question posted in
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Visual Studio Code – How do I open a file txt in a specific folder using visual studio c++?

This is the part of code where I try to open the file f1.txt, it is complete path is C:UsersHpDesktopNSGA2-CDSDataSetf1.txt

ifstream fichier("C:UsersHpDesktopNSGA2-CDSDataSetf1.txt", ios::in);

The file cannot be opened and I don’t know why?!

NSGA2-CDS is the folder that contain the visual studio solution

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Answers


  1. 0

    You have to escape backslashes in the path string:

    ifstream fichier("C:\Users\Hp\Desktop\NSGA2-CDS\DataSet\f1.txt", ios::in);

    This has nothing to do with file I/O as such; it’s a feature of string literals: is used to escape special characters (such as n, t), so when it appears in a string, it needs to be escaped as well.

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  2. 0

    you can also use raw string literal so you don’t need to escape individual char.

    ifstream fichier(R"(C:UsersHpDesktopNSGA2-CDSDataSetf1.txt)", ios::in);
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