Count no. of alphabets in a file.

//Program to count number of alphabets in a file.
#include<fstream.h>
#include<conio.h>
#include<ctype.h>
void main()
{
    clrscr();
    int count=0;
    char a;

    ofstream ofile("file.txt");
    ofile<<"abcde34fghi43jkl34m234nop2343252qrst34uvwxyz";
    ofile.close();

    ifstream ifile("file.txt");
    while(!ifile.eof())
    {
        ifile.get(a);
        if(isalpha(a))
        count++;
    }
    cout<<count;
    getch();
}