2.9BSD/usr/man/cat3/putbak.3f

PUTBAK(3F)          UNIX Programmer's Manual           PUTBAK(3F)

NAME
     putbak - push character back into a file

SYNTAX
     character*1 c
     integer fileid
     putbak(c, fileid)

DESCRIPTION
     _P_u_t_b_a_k pushes the character _c back on the input file associ-
     ated with _f_i_l_e_i_d.  That character will be returned by the
     next _g_e_t_c(3F) call on that file.

     One character of pushback is guaranteed provided something
     has been read from the file and the file is actually buf-
     fered.  Attempts to put back EOF are rejected.

     _S_e_e_k(3F) erases all memory of pushed back characters.

SEE ALSO
     getc(3F), seek(3F)

AUTHOR
     Bruce Julian, U.S. Geological Survey, Menlo Park, California

Printed 5/17/83                                                 1