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

Gratuitous verbosity considered harmful. I would never write unsigned int or long int or signed anything (except char or bitfields) because it increases clutter and decreases the amount of meaningful code you can fit in 80 columns. (Or more likely, encourages people to write code that does not fit in 80 columns...)