Re: [Mingw-users] no need for #include <stdio.h> ???

[M J. R. <jo...@um...>]

you WILL need to include it if you attempt to call printf again
with a different number of arguments. when a function call is encountered
without a preceding declaration (in C), it is often assumed to
return and int and take the number and type of parameters supplied.

when you use it the first time (or once) like you did, it is
implicitly declared as

	int printf(char *);

attempting to call it later with a different parameter list
will fail if it differs from this declaration. this includes
such things as

	printf("%d", 5);
	printf("%s", "boo!");

in short, always include the header file.

M Joshua Ryan
Vera went to see a man about an avacado

On Sat, 30 Mar 2002, Victor Munoz wrote:

> Hi,
> 
> I just run this program
> 
> int main(int argc, char **argv) {
>  printf ("\n\aHello\n");
>  return (0);
> }
> 
> then I compiled
> 
> gcc -o Hello Hello.c
> 
> and got the executable. It is working OK
> 
> The question is Why I dont need the #include <stdio.h> at the begining
> of the program?
> 
> Is it a glitch?
> 
> Note: I check my environment and no indication of lib or any other path
> to lib
> 
> and search for stdio.h in all directories and I found only located in
> MinGW\include\stdio.h
> 
> Thanks,
> 
> Victor Munoz
> 
> 
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