Count the number of words in a file in C++

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
 ifstream fin("aaaaa.txt");
 int word=1;
 char ch;
 fin.seekg(0,ios::beg);

 while(fin)
 {
  fin.get(ch);
  if(ch==' '||ch=='\n')
   word++;
 }

 cout<<"\nWords="<<word<<"\n";
 fin.close();

 return 0;
}