@node strncpy, string
@subheading Syntax

@example
#include <string.h>

char *strncpy(char *s1, const char *s2, size_t max);
@end example

@subheading Description

This function copies up to @var{max} characters of @var{s2} into @var{s1}.

@subheading Return Value

@var{s1}

@subheading Portability

@portability ansi, posix

@subheading Example

@example
char buf[100];
strncpy(buf, arg, 99);
@end example