Omitting the datatype (e.g. “unsigned” instead of “unsigned int”)

Question

I know that if the data type declaration is omitted in C/C++ code in such way: unsigned test=5;, the compiler automatically makes this variable an int (an unsigned

Answer 1

I would even take it one step further and use stdint's uint32_t type.
It might be a matter of taste, but I prefer to know what primitive I'm using over some ancient consideration of optimising per platform.