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if ((four = malloc(sizeof(struct foo))) == NULL)		if ((four = malloc(sizeof(struct foo))) == NULL)
err(1, (char *)NULL);		err(1, (char *)NULL);
if ((six = (int *)overflow()) == NULL)		if ((six = (int *)overflow()) == NULL)
errx(1, "number overflowed");		errx(1, "number overflowed");
return (eight);		return (eight);
}		}
.Ed		.Ed
.Pp		.Pp
Old-style function declarations look like this:		When converting K&R style declarations to ANSI style, preserve
.Bd -literal		any comments about parameters.
static char *
function(a1, a2, fl, a4)
int a1, a2; /* Declare ints, too, do not default them. */
float fl; /* Beware double vs. float prototype differences. */
int a4; /* List in order declared. */
{
.Ed
.Pp		.Pp
Use ANSI function declarations unless you explicitly need K&R compatibility.
Long parameter lists are wrapped with a normal four space indent.		Long parameter lists are wrapped with a normal four space indent.
.Pp		.Pp
Variable numbers of arguments should look like this:		Variable numbers of arguments should look like this:
.Bd -literal		.Bd -literal
#include <stdarg.h>		#include <stdarg.h>

void		void
vaf(const char *fmt, ...)		vaf(const char *fmt, ...)
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