don't do 1 byte writes, buffer and flush unbuffered I/O (stderr).

[unix-history] / usr / src / lib / libc / stdio / fgets.c

/* @(#)fgets.c  4.1 (Berkeley) %G% */
#include        <stdio.h>

char *
fgets(s, n, iop)
char *s;
register FILE *iop;
{
       register c;
       register char *cs;

       cs = s;
       while (--n>0 && (c = getc(iop))>=0) {
               *cs++ = c;
               if (c=='\n')
                       break;
       }
       if (c<0 && cs==s)
               return(NULL);
       *cs++ = '\0';
       return(s);
}