Enum Class "could not convert to unsigned int"

Question

I have an enum class like this: ``` typedef unsigned int binary_instructions_t; enum class BinaryInstructions : binary_instructions_t { END_INSTRUCTION = 0x0, RESET, SET_STEP_TIME, SET_STOP_TIME, START, ADD }; ``` And I am trying to use the members of the enum in a switch statement like this: ``` const std::string& function(binary_instructions_t arg, bool& error_detect) { switch(arg) { case (unsigned int)BinaryInstructions::END_INSTRUCTION: return "end"; break; } translate_error = true; return "ERROR"; } ``` Why is the cast to `(unsigned int)` required when the underlying type is already an `unsigned int`?

Accepted Answer

That's because "enum class" is "strongly-typed", so not implicitly convertible to any other type. http://en.wikipedia.org/wiki/C%2B%2B11#Strongly_typed_enumerations

Enum Class "could not convert to unsigned int"

Solution

Problem