Assembly problem - opening file with path in a string

char path[] = "file.txt"

#include <stdio.h>
#define CR 0AH // carriage return

int main(void) {
  
  char prompt[] = "Enter path of file to send:";
  char path[300];
  char comms_name[] = "bye.txt";
  char char_to_send;
  char read_only[] = "r";
  char read_write[] = "w+";
  FILE *file;
  FILE *comms;

  __asm {
    /* ask for filepath */
      lea eax,prompt                  // move address of string to eax
      push eax                        // push address onto stack
      call printf                     // call os routine to print prompt
      add esp,4                       // scrub parameter from stack
      
      lea ebx,path                    // set pointer to path string
getnx:push ebx                        // save pointer on stack
      call getchar                    // read from STDIN
      pop ebx                         // restore pointer
      mov [ebx],al                    // save char to array
      inc ebx                         // increment pointer
      cmp al,CR                       // test for end of input
      jnz getnx                       // continue reading input
      mov [ebx],0                     // insert terminating sentinel

    /* open comm port */
      lea eax,read_write              // tell fopen we want write permission
      push eax                        // push to stack
      lea eax,comms_name              // give fopen handle
      push eax                        // push to stack
      call fopen                      // call os routine
      add esp,8                       // scrub stack
      cmp eax,0                       // check port opened successfully
      mov comms,eax                   // move data into variable
      je TERMINATION                  // terminate if port failed to open


    /* open file */
      lea eax,read_only               // tell fopen we don't need to write
      push eax                        // push to stack
      lea eax,path                    // give fopen handle
      push eax                        // push to stack
      call fopen                      // call os routine
      add esp,8                       // scrub stack
      cmp eax,0                       // check file opened successfully
      mov file,eax                    // move data into variable
      je TERMINATION                  // terminate if file failed to open

    /* read file */
WHILENOTEOF:
      mov eax,file                    // tell fgetc file to read from
      push eax                        // push onto stack
      call fgetc                      // call os routine
      add esp,4                       // scrub stack
      mov char_to_send,al             // lower 8 bits only
      cmp al,EOF                      // check for EOF
      je FILECLOSE                    // close file if end reached
      mov char_to_send,al             // get char ready to send

    /* encrypt file */


    /* send file */
      mov eax,comms                   // we are writing to comm port
      push eax                        // push to stack
      xor eax,eax                     // ???
      mov al,char_to_send             // move char ready to send
      push eax                        // push to stack
      call fputc                      // call os routine
      add esp,8                       // scrub stack
      jmp WHILENOTEOF                 // loop if more to read

FILECLOSE:
      mov eax,file                    // tell fclose what to close
      push eax                        // push to stack
      call fclose                     // call os routine



TERMINATION:
  }

  printf ("%s", path);

  return 0;
}

   char path[] = "file.txt"

   char path[];

   char path[PATH_LEN];

   char* path;
   /* ... do other things */
   path = calloc(p_len, sizeof(char));
   /* ...use 'path'  */ 
   free(path);

char path[300];