Im trying to write a C program where the number of character

I\'m trying to write a C++ program where the number of characters in each word of a text file is counted. I\'m having trouble defining in my loop exactly when a word begins and ends (using characters). How can I reword this loop so that it recognizes a word and adds the number of characters in it to the variable called \"word?\" Here\'s what I have so far:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main(){
ifstream fin(\"file.txt\");
int word=0;
char ch;
while(fin && ch!= \'.\'){
  if(ch==\' \' || ch==\'\ \')
   word++;
//It is wrong because some of the text may have large portions of blank spaces which, by this loop, would be counted as chars in a word. Please explain all steps in logic.

Solution

//main.cpp

=========================================================

out.txt