1 /* @(#)fgets.c 4.1 (Berkeley) 12/21/80 */ 2 #include <stdio.h> 3 4 char * 5 fgets(s, n, iop) 6 char *s; 7 register FILE *iop; 8 { 9 register c; 10 register char *cs; 11 12 cs = s; 13 while (--n>0 && (c = getc(iop))>=0) { 14 *cs++ = c; 15 if (c=='\n') 16 break; 17 } 18 if (c<0 && cs==s) 19 return(NULL); 20 *cs++ = '\0'; 21 return(s); 22 } 23