Count no. of alphabets in a file.

//Program to read content from a text file out.txt, count and display the number of alphabets present in it.
//out.txt:-"C++ is a general purpose programming language."
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
void main()
{
    clrscr();

    char a;
    int count=0;
    ifstream ifile("out.txt");
    while(!ifile.eof())
    {
        ifile.get(a);
        if((a>=65 && a<=90)||(a>=97&&a<=122))
        {
            count++;
            cout<<a;
        }
    }
    cout<<endl<<"Number of aplhabets in the file out.txt: "<<count;
    getch();
}