signed ....
 

one of the best ways to optimate the compiling is to use signed before an int value?Why


where can i find more document about this type of declaration of a func?
function(int type, .... );

By default, int already has 'signed' in front of it.

You should worry less about how fast something compiles and more about how fast something runs. I think that is what you may mean.

im not really sure what u are trying to ask? an integer is a signed type, an unsigned integer is an unsigned type.

unsigned would actually be a bit faster