More stuff
diff --git a/length.c b/length.c
index 284bbfd..f2dadd2 100644
--- a/length.c
+++ b/length.c
@@ -3,11 +3,13 @@
#include <string.h>
#include <stdio.h>
-const char length_usage[] = "length string";
-
-int
-length_main(struct FileInfo * i, int argc, char * * argv)
+extern int
+length_main(int argc, char * * argv)
{
- printf("%d\n", strlen(argv[1]));
- return 0;
+ if ( **(argv+1) == '-' ) {
+ fprintf(stderr, "Usage: length string\n");
+ exit(FALSE);
+ }
+ printf("%d\n", strlen(argv[1]));
+ return( TRUE);
}