atm_error - print an ATM error message
extern int atm_errno;
void atm_error(errormsg)
char *errormsg;
atm_error() prints a message to standard error which
describes the last error received during an ATM user-level
library routine. As with perror(3) the user-supplied
errormsg is printed followed by a colon and a textual
description of atm_errno.
atm_intro(4N), perror(3)