C++ compilation error: C99 or C++1x features are not supported, how to solve it?

C is a very popular programming language with rich features and powerful functions. However, when compiling C code, you may encounter some error messages, one of the common errors is "C99 or C 1x features are not supported". If you encounter this error, don’t panic, the next step will fix it for you.

The reason for this compilation error is that your compiler version may be too old and does not support the new version of the C language standard. This compilation error is reported when your code uses C99 or C 1x features and your compiler cannot parse these features.

To fix this problem, you need to do the following:

1. Upgrade your compiler

First, you need to try upgrading the compiler you are currently using translater. If you are using an older version of the compiler, then you can try to get the latest version. Many modern compilers support features of C99 and C 1x, so upgrading your compiler may solve this problem.

2. Specify compiler version

If you are unable to upgrade the compiler, or you do not want to change the compiler version, then you can try to solve the problem by specifying the compiler version . Most compilers provide an option that allows you to specify the desired version of the C language standard. You can use this option to tell the compiler whether you are using the C 1x or C99 standard. For example, in the GCC compiler you can specify the C99 standard using the following option:

-std=c99

Likewise, you can specify the C99 standard using the following option: C 1x Standard:

-std=c 1x

Note that the availability and syntax of these options may vary between compilers.

3. Change your code

If you cannot upgrade your compiler or use options to specify the desired version of the C standard, you may need to change your code. You need to change the C99 or C 1x features used in your code to the standard C language. Please note that this may require some time and effort, so consider this carefully.

Summary

The above introduces the method to solve "C99 or C 1x features are not supported". You can try to upgrade the compiler, specify the compiler version or change your code. Of course, these are just some solutions, and actual problems require specific analysis of specific problems. Hope this article can provide you with some help.

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