Variables in C Function

Question

here is the code:

wint_t 
__woverflow (f, wch)
_IO_FILE *f;
wint_t wch;
{
if (f->_mode == 0)
    _IO_fwide (f, 1);
return _IO_OVERFLOW (f, wch);
}

But why are the variables between the name of the function and the start of body of the function? Im mean *f and wch. Are they locals or global?

score 0 · Accepted Answer · edited Oct 12 '14 at 12:26

0

This is an old style C syntax.

Are they locals or global?

They are local variables. It is same as

wint_t __woverflow (_IO_FILE *f, wint_t wch)
{
    if (f->_mode == 0)
    _IO_fwide (f, 1);
    return _IO_OVERFLOW (f, wch);
}

edited Oct 12 '14 at 12:26

answered Oct 12 '14 at 12:21

haccks

mh. i understand that they just the definition auf the parameters – Oct 12 '14 at 12:24

score 0 · Answer 2 · answered Oct 12 '14 at 12:21

0

This is K & R style function definition.

Your posted code is similar to:

wint_t __woverflow (_IO_FILE *f, wint_t wch)
{
    if (f->_mode == 0)
        _IO_fwide (f, 1);
    return _IO_OVERFLOW (f, wch);
}

They are local to the function.

answered Oct 12 '14 at 12:21

ani627

2 Answers2