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I'm currently using C++ and VSCode for competitive programming in USACO. Recently, they changed their input format from file input to inputting data from terminal/stdin, which is slower because I have to paste the input into the terminal every time. Is there a way to just write data to a file and have it inputted into cin every time I run my program?

doggosvsshibes
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  • Are you looking for input redirection? Something like `myProgram < myFile.txt`? – Nathan Pierson Jul 03 '22 at 21:23
  • You can make cin read from a file (but you need to undo it before submitting obviously) https://stackoverflow.com/questions/10150468/how-to-redirect-cin-and-cout-to-files – Jerry Jeremiah Jul 03 '22 at 21:42

1 Answers1

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I personally use custom run configuration < input > myoutput && diff myoutput output with CodeRunner to read input and compare with expected output.

For example in case of C++,
In VSCode's settings.json, modify the code-runner.executorMap as below and use Ctrl+Alt+N to run

"code-runner.executorMap": {
        ...
        "cpp": "cd $dir && g++ $fileName -o $fileNameWithoutExt && $dir$fileNameWithoutExt < input > myoutput && diff myoutput output",
        ...
}

input - input to your program
output - the expected output from your program
myoutput - the actual output of your program.

Manav Chhibber
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