Thread: Help for compilation and type casting

hi everyone,

I am working on a program that calls another function, the other
function has some variables which unsigned char the
function that I am working on has some temporary char arrays
and it causing a lot of trouble specially when using fgets .

I am passing function callled encrypt( unsigned char *plain, unsigned char *cipher ) and I am passing two char arrays, I see that they are different but How do I get around this situation ?

Code:

code

void CipherText(FILE *infile, FILE *outfile  )
{
      int count = 0;
      int i;
      ByteType plain[Max + 1];
      ByteType cipher[Max + 1];
      char str [Max];
      ByteType *non_alpha_str;

      /* Read strings one by one from infile */
    while (fgets (str, Max, infile) != NULL)
    {
       /* Convert each string to one without non-alpha characters */
        non_alpha_str = get_alpha_str (str);

         for ( i = 0 ; i < Max; i++)
	     {
	        /* if characters read are 8, then we start processing */
             if (count % 8 == 0)
	         { 
	          /*copy the non_alpha_charcter to temporary array for procesing */
                           /*copy the non_alpha_charcter to temporary array for procesing */
                  cipher [0] = non_alpha_str[ i  ];
                  cipher [1] = non_alpha_str[ i + 1 ];
                  cipher [2] = non_alpha_str[ i + 2 ];
                  cipher [3] = non_alpha_str[ i + 3 ];
                  cipher [4] = non_alpha_str[ i + 4 ];
                  cipher [5] = non_alpha_str[ i + 5 ];
                  cipher [6] = non_alpha_str[ i + 6 ];
                  cipher [7] = non_alpha_str[ i + 7 ];
                  cipher [8] = non_alpha_str[ i + 8 ];
                  cipher [9] = '\0';
             /********** this function has 2 Bytetype rgumsents****/
                  Decrypt (cipher, plain );    ---
                  /* for test purposes */
                  printf("%c", plain );

                  /* write it to output file */
                  if (fputs (plain, outfile) == EOF)
                  {
                     printf("Error while writing %s\n", plain);
                  }

                  fputs (plain, outfile);
                  count = 0;
                  
               }                   
             count++;       
	     }

           
	  }
               

}

I do not really understand the question.

>Decrypt (cipher, plain );

Note that cipher and plain are arrays of ByteType's. Is Decrypt expecting arrays?

Also note that you haven't allocated memory for non_alpha_str.

Hi everyone,

the plain and cipher are strings of chars that are passed to decrypt function for decryption, the decleaaration of decrypt function is as
follows:

Decrypt ( ByteType *x, ByteType *y);

I am having too many warning from the compiler, I think because
of the datatype difference. I was asking if there is a way to get around this situation.