An issue from define the fuzzy rule in example.

[lttai86tt]

I used VS code to compile the program. However, I have an error. Have you encountered this problem before?
@

"expression must have a constant value
#define PROPOSITION(_antecedent,_consequent) {.antecedent = (FuzzyAntecedent_t[])_antecedent, .num_antecedents = sizeof((FuzzyAntecedent_t[])_antecedent) / sizeof(FuzzyAntecedent_t), .consequent = _consequent}
Define a macro to create a fuzzy rule "

I think your example might not be correct. If that's not the case, did I make a mistake?
Thanks.

[playduck]

The example still compiles and my VSCode's intellisense shows no such error.

The propositions are implemented using structs with variable-length arrays, those are an optional part of the C language but not in C++ (see this StackOverflow Answer).
Using gcc it even works with the newest -std=c2x flag.

Perhaps your VSCode's intellisense is configured to use and show errors for C++?