#include <iostream.h>
#include <fstream.h>
#include <strstream.h>
#include <stdlib.h>
#include <ctype.h>
#include <string>

// count # of lines, # chars, # words in input file
// written: 7/19/94
// by:      Owen Astrachan
//
// reads input file one char at time, uses state-machine like
// method for determining 'word-hood'

// revised: use <string> instead of "CPstring.h"

struct FileStats
{
    string filename;           // name of file
    long int numLines;         // # of lines in the file
    long int numChars;         // # of characters in the file
    long int numWords;         // # of words in the file
};


void GetStats(FileStats & stats);

int main()
{
    FileStats stats;
    
    cout << "enter name of input file: ";
    cin >> stats.filename;

    GetStats(stats);
        
    cout << "lines = "  << stats.numLines
         << " chars = " << stats.numChars
         << " words = " << stats.numWords << endl;
    return 0;
}

void GetStats(FileStats & stats)
// precondition: stats.filename corresponds to a text file
// postcondition: data members numLines, numChars, numWords reflect # of
//                lines, chars, words in the file stats.filename  
{
    ifstream input( stats.filename.c_str() );		// convert string to c_string
    stats.numLines = stats.numChars = stats.numWords = 0;    
    string s;
    
    while (getline(input,s))               // reading line succeeded
    {
        stats.numLines++;
        stats.numChars += s.length() + 1;   // add 1 for newline
        istrstream words(s.c_str());          // bind stream to string s
        string dummy;
        while (words >> dummy)        // getting word succeeds
        {
            stats.numWords++;
        }
    }
}