Word count for input file: file read with ifstream : File Utility « File « C++






  1. C++
  2. File
  3. File Utility

Word count for input file: file read with ifstream

 

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

int main(int argc, char *argv[])
{
  if(argc!=2) {
    cout << "Usage: COUNT <input>\n";
    return 1;
  }

  ifstream in(argv[1]);

  if(!in) {
    cout << "Cannot open input file.\n";
    return 1;
  }

  int count=0;
  char ch;

  in >> ch; // find first non-space char

  // after first non-space found, do not skip spaces
  in.unsetf(ios::skipws);

  while(!in.eof()) {
    in >> ch;
    if(isspace(ch)) {
      count++;
      while(isspace(ch) && !in.eof()) 
         in >> ch; // find next word
    }
  }

  cout << "Word count: " << count << '\n';

  in.close();

  return 0;
}








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