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HEAD
replaced various machine defs with MACHINE
[unix-history]
/
usr
/
src
/
usr.bin
/
rev
/
rev.c
static char
*
sccsid
=
"@(#)rev.c 4.1 (Berkeley) %G%"
;
#include <stdio.h>
/* reverse lines of a file */
#define N 256
char
line
[
N
];
FILE
*
input
;
main
(
argc
,
argv
)
char
**
argv
;
{
register
i
,
c
;
input
=
stdin
;
do
{
if
(
argc
>
1
) {
if
((
input
=
fopen
(
argv
[
1
],
"r"
))==
NULL
) {
fprintf
(
stderr
,
"rev: cannot open %s
\n
"
,
argv
[
1
]);
exit
(
1
);
}
}
for
(;;){
for
(
i
=
0
;
i
<
N
;
i
++) {
line
[
i
] =
c
=
getc
(
input
);
switch
(
c
) {
case
EOF
:
goto
eof
;
default
:
continue
;
case
'
\n
'
:
break
;
}
break
;
}
while
(--
i
>=
0
)
putc
(
line
[
i
],
stdout
);
putc
(
'
\n
'
,
stdout
);
}
eof
:
fclose
(
input
);
argc
--;
argv
++;
}
while
(
argc
>
1
);
}