Why should you not use the double data type in case of exceptions?

1. Direct handling of exceptions using double (for example, as an error code) is unjustified, as double is not intended for this and does not carry error semantics.
2. The double type has limited precision and can represent special values (NaN, Infinity), which complicates their interpretation as error codes.
3. Using double to pass error information between functions can lead to loss of precision or incorrect interpretation due to the peculiarities of floating-point representation.
4. The standard C++ exception mechanism (throw/catch) or specialized types for error codes (std::error_code) provide more reliable and explicit means for exception handling.

Using double in such a context violates principles of explicit code and complicates debugging.