Differences between struct in C and C++

Question

I am trying to convert a C++ struct to C but keep getting "undeclared identifier"? Does C++ have a different syntax for referring to structs?

struc         


        

Answer 1

You need to refer to KEY_STATE with struct KEY_STATE. In C++ you can leave the struct out, but not in plain C.

Another solution is to do a type alias:

typedef struct KEY_STATE KEY_STATE

Now KEY_STATE means the same thing as struct KEY_STATE