Count number of vowels in file

#include <stdio.h>
#include <stdlib.h>
#include<conio.h>
void main(){
   char ch;
   int count=0;
   FILE *fp;
   clrscr();
   fp = fopen("xyz.txt","r"); // read mode
   if( fp == NULL )
   {
      printf("Error while opening the file.
");
      getch();
      exit(0);
   }
   while( 1 ){
     ch = fgetc(fp);
     if(ch == EOF){
           break;
     }
	 if(ch=='a' || ch=='A' || ch=='e' || ch=='E' || ch=='i' || ch=='I' || ch=='o' || ch=='O' || ch=='u' || ch=='U'){
	       count++;
	 }
   }
   printf(“
Number of vowels in file : %d”,count);
   fclose(fp);
   getch();
}