Opening a SD Card for Read/Write

good day,

i'm having problem opening sd card. think i'm doing wrong.
is datatype? first part works fine.
i have snippet of code have been using below testing.

thanks
randy

code: [select]


string test = "";
  if (file == 0)
   {
       strcpy_p(prog_buffer, (char*)pgm_read_word(&(string_table[4])));       
     upcfile = sd.open(prog_buffer, file_write);
   }
  else
   {
      test = getseq(seq) + ".txt";
     serial.println(test);
      upcfile = sd.open(test, file_write);     // error here. because "test" string?
   }

quote

error here. because "test" string?

no. error there because test string, not string.

there no reason test string. make string (a null terminated array of chars) , work.

use sprintf() populate array.

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