Subversion Repositories nfcc

#include <stdio.h>

#include <string.h>

main(int argc, char *argv[])

{

 FILE *f;

 char *fname = "key.lst";

 int c,i;

 const int rot[4] = { -3, -1, 1, 3 };

 char key[60][20];

 if (argc > 1) {

 fname = argv[1]; /*

 i = 1;

 printf("%3d ", argc);

 while (i < argc) {

  printf ("-- %s ", argv[i]);

  i++;

 }

 printf("\n"); */

 }

if(fname && (f = fopen(fname, "rt"))) {

  i = 0;

  while(fgets(key[i],sizeof(key[i]),f) != NULL) {

    c = strlen(key[i]);

    if(key[i][c-1] == '\n') key[i][c-1] = '\0';

    i++;

  }

  fclose (f);

} else {

  fclose (f);

}

/*

 if (fname && (f = fopen ( fname, "rt"))) {

        printf ("Success opening %s, ", fname);

 } else {

        fclose (f);

 }

 i = 0;

 while(fgets(key[i],sizeof(key[i]),f) != NULL){

  c = strlen(key[i]);

  if(key[i][c-1] == '\n') key[i][c-1] = '\0';

  i++;

 }

 printf("got %3d lines\n", i);

*/

 for (c = i-1 ; c >= 0; c--) printf("%s\n", key[(c-rot[c%4])]);

// for (c = i-1 ; c >= 0; c--) printf("%3d -- %3d -- %s\t%s\n", c, c%4, key[c], key[(c-rot[c%4])]);

 fclose (f);

}