Re: Printf question.

Charles Richmond wrote: 
usenet@xxxxxxx wrote:

praeiji <spacecaps@xxxxxxxxx> wrote:


But why are they typecasted to int? Does it come from gcc when it sees
"%d" and the printf function?


No, they are not typecasted, but `promoted', which is not the same thing.
Promotion is what happens when you call a function that has no prototype, or
when a function with a variable number (variadic) of arguments like printf()
is called. With promotion, all arguments are converted to a generic 'bigger'
type: char and short to int, float to double.


Type promotion can also happen when you do mixed mode arithmetic. 

    Or even unmixed-mode arithmetic:

	short x = 1, y = 2;
	short z = x + y;    /* see the "int"? */

--
Eric Sosman
esosman@xxxxxxxxxxxxxxxxxxx
.

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