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 the end of text may have large portions of blank spaces which, by this loop, would be counted as chars in a word

Solution

// C++ code

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main()
{
string word;
int sum=0;
int characters;
ifstream fin ;
fin.open(\"file.txt\");

while(!fin.eof())
{
// read word
fin >> word;

// count characters in word
characters= word.length();
  
cout << word << \" => \" << characters << endl;

// add characters to sum
sum=characters+sum;
}

cout << \"Number of characters in file: \"<< sum << endl;

return 0;
}

/*
file.txt
his style deploys a lack of conventional paragraphing .

output:
his => 3
style => 5
deploys => 7
a => 1
lack => 4
of => 2
conventional => 12
paragraphing => 12
. => 1
Number of characters in file: 47

*/