General Code review

Evening,
I am a student learning C and would like some opinions on the follow section of my program. The below section uses STRTOK to read in a string, break it into tokens and finally print to stdout and to file the tokens in the reverse order in which they were read. For the sake of space, I have included only the section that pertains to the STRTOK function. Though the program works, the method in which I reverse the text has me wondering if there is a more effecient way. Basically, I write the contents of each token to a pointer location, and then printf the newly created pointer.

Is there a better way to do this?

Code:

---

   
                                                //reverse string section

        printf("\n\nThe sentence printed in reverse order is: ");

        tkptr = strtok(originalString, seps);

        value[r]=tkptr;

        while(tkptr != NULL)
      {
            tkarray[r++] = originalString;
            tkptr = strtok(NULL,seps);
            value[r]=tkptr;
        }
                                                             
        fo=fopen("proj_out.txt","w");      //Opens file for writing.
       
                //iterates through tokens displaying the sentence in  reverse and writes out tokens to file.

        while (r>0)

      {
       
          printf("%s ",value[r-1]);
 
          fprintf(fo,value[r-1]);
       
          fprintf(fo," ");
 
        r--;
      }

        fclose(fo);  // Closes output file pointer
        }

---

Thanks to all who comment,

> Is there a better way to do this?
There's always a different way ;)

Some comments
1. strtok() modifies your string, which could be a really bad idea in some cases.
2. you also need to declare an array in advance with the maximum number of words in your string.

Here's an alternative suggestion.
Use a loop to walk backwards over the string, and write out each word as you find it.