#include<stdio.h>
int main(void)
{
 unsigned char moji[10];
 FILE *fp;
 if((fp = fopen("work.txt", "r")) == NULL)
 {
  printf("FILE OPEN ERROR\n");
 }
 else
 {
  if(fgets(moji, 2, fp) != NULL)
  {
   printf("      FILE READ OK !!\n");
   printf("      READ DATA -> %s\n", moji);
  }
  else
  {
   printf("      FILE READ ERROR\n");
  }
  fclose(fp);
 }
 return 0;
}

FILE OPEN ERROR