fmt_strn.c

来自「linux下qmail的源码 本人加了一些注释」· C语言 代码 · 共 13 行

#include "fmt.h"

unsigned int fmt_strn(s,t,n)
register char *s; register char *t; register unsigned int n;
{
  register unsigned int len;
  char ch;
  len = 0;
  if (s) { while (n-- && (ch = t[len])) s[len++] = ch; }
  else while (n-- && t[len]) len++;
  return len;
}