28 lines
412 B
C
28 lines
412 B
C
|
/*
|
||
|
|
* fgets.c - get a string from a file
|
||
|
|
*/
|
||
|
|
/* $Header$ */
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
char *
|
||
|
|
fgets(char *s, register int n, register FILE *stream)
|
||
|
|
{
|
||
|
|
register int ch;
|
||
|
|
register char *ptr;
|
||
|
|
|
||
|
|
ptr = s;
|
||
|
|
while (--n > 0 && (ch = getc(stream)) != EOF) {
|
||
|
|
*ptr++ = ch;
|
||
|
|
if ( ch == '\n')
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (ch == EOF) {
|
||
|
|
if (feof(stream)) {
|
||
|
|
if (ptr == s) return NULL;
|
||
|
|
} else return NULL;
|
||
|
|
}
|
||
|
|
*ptr = '\0';
|
||
|
|
return s;
|
||
|
|
}
|