C program to read characters from existing file using fgetc() function

#include<stdio.h>
#include<conio.h>
 void main()
 {char ch;
  FILE *fp=fopen("c:\\tc\\data_file.txt","r");
  clrscr();
  if(fp==NULL)
   {
    printf("\n\n File does not exist \n");
    getch();
    exit(0);
    }
   while(1)
   {ch=fgetc(fp);
    if(ch==EOF)
     break;
    putc(ch,stdout);
    }
   fclose(fp);
    getch();
  }