Скачать или смотреть Solving the scanf Exception Error in Visual Studio 2019

Are you facing random exceptions when using `scanf` or `scanf_s` in Visual Studio 2019? Learn the solutions and alternatives in our detailed guide!
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This video is based on the question https://stackoverflow.com/q/62512516/ asked by the user 'Idiot' ( https://stackoverflow.com/u/13791151/ ) and on the answer https://stackoverflow.com/a/62514664/ provided by the user 'Ege Yıldırım' ( https://stackoverflow.com/u/12416058/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the scanf Exception Error in Visual Studio 2019: A Quick Guide

If you are a budding programmer using C+ + in Visual Studio 2019, you might have encountered a rather frustrating issue: a random exception thrown by scanf or scanf_s. This error can halt your progress and leave you scratching your head. In this guide, we will explore the underlying reasons behind this problem and guide you toward effective solutions.

Understanding the Problem

In C+ + , particularly when using Visual Studio, scanf and its safer variant, scanf_s, can sometimes lead to unexpected exceptions. Here’s the code snippet that can trigger this issue:

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The error can be confusing, especially for newcomers, leading to questions like: “What am I doing wrong?” or “Is my code broken?” Fortunately, there are effective ways to handle this situation.

Proposed Solutions

Here are the key avenues you can explore to address this issue:

1. Use scanf Instead of scanf_s

One straightforward solution is to switch from scanf_s to the traditional scanf. While scanf_s is designed to be safer by allowing you to specify buffer sizes, for basic outputs, it can be more complex and sometimes generates exceptions in certain environments.

To implement this change, update your code like so:

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2. Define Macro to Silence Security Warnings

If you prefer to continue using scanf_s but want to avoid the exceptions, consider defining a macro at the top of your code:

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This effectively silences the security warnings that might be causing problems when utilizing scanf_s.

3. Prefer Using std::string with cin and cout

For most C+ + programming tasks involving strings, using the C+ + standard library’s std::string in conjunction with cin and cout can simplify your code significantly. Here’s how to implement this:

[[See Video to Reveal this Text or Code Snippet]]

Why Use std::string?

Easier to Handle: std::string automatically manages memory for you, reducing the risk of buffer overflows and exceptions.

Better Readability: Using cin and cout with std::string enhances your code’s readability and makes string manipulation a breeze.

Conclusion

Navigating coding challenges is a part of every developer’s journey. If you encounter random exceptions with scanf or scanf_s in Visual Studio 2019, fear not! By switching to scanf, defining appropriate macros, or adopting std::string with cin and cout, you can overcome these hurdles effectively.

Keep experimenting with your code and take advantage of the C+ + features available to you. Happy coding!