47   FILE *In, *Out;  in main()  local
65   In  = fopen (argv[1], "r");  in main()
66   fseek (In, 0, SEEK_END);  in main()
67   InFileSize = ftell (In);  in main()
72   fseek (In, 0, SEEK_SET);  in main()
76   if ((In == NULL) || (Out == NULL)) {  in main()
114     fseek (In, InFilePos, SEEK_SET);  in main()
115     ReadCount = fread (Key, 1, MaxLenKey, In);  in main()
135   fseek (In, InFilePos, SEEK_SET);  in main()
136   while ((c = fgetc (In)) != EOF) {  in main()
140   fclose (In);  in main()