c++ c6031 getch - Search
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    Upvotes13Top Answeredited Apr 9, 2019 at 0:20

    When visual studio was updated, they added a [[nodiscard]] attribute to getchar. This tells the compiler to warn the user whenever the return value of a function is ignored. You can find out more here: https://en.cppreference.com/w/cpp/language/attributes/nodiscard

    In this case, because you're using getchar just to prevent the window from closing, y...

    (void)getchar(); //Explicitly ignore return value
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  3. Stack Overflow
    https://stackoverflow.com/questions/55583364

    c++ - 6031: return value ignored (getchar()) In visual studio 2019 ...

    Visual Studios won't compile code because of warning C6031 ("Return ...Dec 12, 2020
    c - How to fix "return value ignored: 'scanf'" code C6031 in visual ...Sep 18, 2019
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  4. Microsoft Learn
    https://learn.microsoft.com/en-us/cpp/code-quality/c6031

    Warning C6031 | Microsoft Learn

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  5. DigitalOcean
    https://www.digitalocean.com/community/tutorials/...

    Using the getch() function in C/C++ | DigitalOcean

  6. Microsoft Learn
    https://learn.microsoft.com/en-us/cpp/c-runtime...

    _getch, _getwch | Microsoft Learn

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    _getwch
  7. Github
    https://github.com/.../main/docs/code-quality/c6031.md

    cpp-docs/docs/code-quality/c6031.md at main - GitHub

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  8. CodeProject
    https://www.codeproject.com/Questions/1223238/...

    Microsoft visual studio 2017 - getch () problem - CodeProject

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    Getch Error in Visual Studio
  9. People also ask
    What does c6031 mean in JavaScript?Return value ignored: ' called-function ' could return unexpected value Warning C6031 indicates the caller doesn't check a function's return value for failure. Depending on which function is being called, this defect can lead to seemingly random program misbehavior.

    Warning C6031 | Microsoft Learn

    learn.microsoft.com
    What is C++ code analysis warning c6031?Describes C++ Code Analysis warning C6031 and how to resolve it. Return value ignored: ' called-function ' could return unexpected value Warning C6031 indicates the caller doesn't check a function's return value for failure. Depending on which function is being called, this defect can lead to seemingly random program misbehavior.

    cpp-docs/docs/code-quality/c6031.md at main - GitHub

    github.com
    Is _getch a thread-safe function?There's no error return. The _getch and _getwch functions read a single character from the console without echoing the character. To read a function key or arrow key, each function must be called twice. The first call returns 0 or 0xE0. The second call returns the key scan code. These functions lock the calling thread and so are thread-safe.

    _getch, _getwch | Microsoft Learn

    learn.microsoft.com
    Why is c6031 a problem in Visual Studio?(See the Visual Studio docs for error C6031 and this documenation on the Source Annotation Library (sal) .) There are good reasons not to ignore the return value of any library function which uses the return value to indicate failure, including many standard library functions which do input or output.

    c - Return value ignored [scanf] - Stack Overflow

    stackoverflow.com
    What is STDIN & getch() function?This function takes in a single character from the standard input ( stdin ), and returns an integer. This is there as part of the <conio.h> header file, so you must include it in your program. This function does not take any parameters. Here, getch() returns the ASCII value of the character read from stdin.

    Using the getch() function in C/C++ | DigitalOcean

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    What does c6031 do if a value is not within a range?else printf("Value is not within (0, 1) range."); C6031 warns that scanf returns the "number of receiving arguments successfully assigned" but the code ignores this return value, and proceeds to use x without having checked that it was, in fact, assigned.

    Visual Studios won't compile code because of warning C6031 ("Return

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  10. CSDN社区
    https://bbs.csdn.net/topics/394782997

    求助大佬！八皇后中 返回值被忽略:“getch” 是什么原 …

    WebOct 19, 2019 · 但于我的设计想法而言是达到目的了的（输出的时候一个个看可以实现的棋局，看完一个按回车看下一个） 若想去除 : 警告C6031 返回值被忽略: “_getch” 则如3楼大佬所言，把 getch返回值赋给一个变量 再就 …

  11. Stack Overflow
    https://stackoverflow.com/questions/41407242

    c++ - Declaring the getch() function - Stack Overflow

  12. Visual Studio Feedback
    https://developercommunity.visualstudio.com/...

    C6031 Return value ignored: 'scanf' - Developer Community

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  13. GeeksForGeeks
    https://www.geeksforgeeks.org/getch-function-in-c-with-examples

    getch() function in C with Examples - GeeksforGeeks

  14. Programiz
    https://www.programiz.com/cpp-programming/library...

    C++ getchar() - C++ Standard Library - Programiz

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  15. CPP Reference
    https://en.cppreference.com/w/cpp/memory/shared_ptr/get

    std::shared_ptr<T>::get - cppreference.com

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  16. Microsoft Learn
    https://learn.microsoft.com/zh-cn/cpp/code-quality/c6031

    警告 C6031 | Microsoft Learn

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  17. Stack Overflow
    https://stackoverflow.com/questions/68547116

    c - Return value ignored [scanf] - Stack Overflow

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  18. Stack Overflow на русском
    https://ru.stackoverflow.com/questions/59820

    c++ - Как работать с getch? - Stack Overflow на русском

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  19. Reddit
    https://www.reddit.com/r/cpp_questions/comments/v5...

    Help...How to solve (C 6031 "return value ignore: 'rename' ")?

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  20. CSDN文库
    https://wenku.csdn.net/answer/6bojz7auip

    _getch()返回值被忽略 - CSDN文库

  21. Stack Overflow
    https://stackoverflow.com/questions/58213233

    c++ - warning C6031 return value ignored in macro expansion

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  22. Stack Overflow
    https://stackoverflow.com/questions/64357511

    Can anyone help me with my C code in this Visual Studio scanf …

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  23. Microsoft Learn
    https://learn.microsoft.com/ja-jp/cpp/code-quality/c6031

    警告 C6031 | Microsoft Learn

  24. Stack Overflow
    https://stackoverflow.com/questions/41219513

    Can I suppress a specific C6031 warning? CString::LoadString