Problem with character counting program...

**MyglyMP2** · 03-25-2005

I'm having problems with this program that i'm trying to write for one of my classes. I'm probably going to get made fun of like last time I posted, but i'm sure it won't be too difficult for you guys to figure the problem out, but i'm kind of new to programming. thanks!

Code:

#include <iostream>
#include <iomanip>
using namespace std;

void print_header();

int main()
{
  int vowel, odd, quote, period, rest, total;
  char file;
  print_header();
do
  {
  switch (file)
    {
    case 'A': case 'a':
    case 'E': case 'e':
    case 'I': case 'i':
    case 'O': case 'o':
    case 'U': case 'u':
    case 'Y': case 'y':
      vowel++;
      break;
    
    case '1': case '3':
    case '5': case '7':
    case '9':
      odd++;
      break;
      
    case '\"': case '\'':
      quote++;
      break;

    case '.':
      period++;
      break;

    default:
      rest++;
    }
  }
 while (cin.eof()); 

 cout << "Category   " << "Count        \n"
      << "========== " << "=============" << endl;
 cout << "quotes     " << quote << endl;
 cout << "vowels     " << vowel << endl;
 cout << "periods    " << period << endl;
 cout << "oddDigits  " << odd << endl;
 cout << "allTheRest " << rest << endl;
 total = (vowel+quote+period+odd+rest);
 cout << "total      " << total << endl;
 return 0;
}

/*
 * Name: print_header
 * Purpose: Display header
 * Receive: Nothing
 * Return: Header
 */

void print_header()
{
  cout << "Name: mygly\n"
       << "Course: CPS 180 (45911)\n"
       << "Assignment: Homework 9\n"
       << "Purpose: count all vowels, quotes, periods, odd integers and non-whitespace and display them in a table format to the user\n";
}

THis is what I get for output when I run it typing "./hw05 < warworlds.txt"

Output:
Name: Mygly
Course: CPS 180 (45911)
Assignment: Homework 9
Purpose: count all vowels, quotes, periods, odd integers and non-whitespace and display them in a table format to the user
Category Count
========== =============
quotes 0
vowels 0
periods -12847528
oddDigits 0
allTheRest 68017
total -12779511

As you can tell I'm have a problem... Thanks

**Magos** · 03-25-2005

You never set "file" to a value, it's uninitialized in the switch-statement.

**MyglyMP2** · 03-25-2005

I'm confused as to what file should be, should I just use if statements instead? The program is supposed to read from the file warworlds.txt and search for vowels, periods, quotes, odd integers and everything else minus white space, and then print it out in the table.

**Magos** · 03-25-2005

I'd do something like:

Code:

while(TRUE)
{
   file = cin.get();
   if(cin.eof()) break;

   switch(file)
   {
      ...
   }
}

Another thing, I don't think normal cin will ever reach eof(), it'll just keep on waiting for more input. Perhaps piping a file like you do will work though...

**MyglyMP2** · 03-25-2005

From what I understand in Unix cin.eof will wait for the user to enter control d, before cin.eof will be true. So does that mean I should have something else be the .eof? What do you mean by while (TRUE), what is TRUE supposed to be?

**Salem** · 03-25-2005

> int vowel, odd, quote, period, rest, total;
Try setting all these to 0 as well, otherwise what do you think vowel++ is going to result in?

**MyglyMP2** · 03-25-2005

For some reason the switch statement only executes one time, which is why i am getting allTheRest = 1 and total = 1. Any ideas on how I can make this loop til it gets to the ned of the file?

**MyglyMP2** · 03-25-2005

Alright, I've fixed almost everything. The only problem i'm having is that it is counting the white space for my all the rest count. here's my new code.

Code:

/*
 * Name : Mygly
 * Course : CPS 180 (45911)
 * Assignment : Homework04
 * Description :  
 */

#include <iostream>
#include <iomanip>
using namespace std;

void print_header();

int main()
{
  int vowel, odd, quote, period, rest, total;
  vowel = 0;
  odd = 0;
  quote = 0;
  period = 0;
  rest = 0;
  total = 0;
  char file;
  print_header();
  do
  {
    file = cin.get();
    if (cin.eof()) break;
  switch (file)
    {
    case 'A': case 'a':
    case 'E': case 'e':
    case 'I': case 'i':
    case 'O': case 'o':
    case 'U': case 'u':
    case 'Y': case 'y':
      vowel++;
      break;
    
    case '1': case '3':
    case '5': case '7':
    case '9':
      odd++;
      break;
      
    case '\"': case '\'':
      quote++;
      break;

    case '.':
      period++;
      break;

    default:
      rest++;
    }
  }
  while (!cin.eof());

 cout << "Category   " << "Count        \n"
      << "========== " << "=============" << endl;
 cout << "quotes     " << quote << endl;
 cout << "vowels     " << vowel << endl;
 cout << "periods    " << period << endl;
 cout << "oddDigits  " << odd << endl;
 cout << "allTheRest " << rest << endl;
 total = (vowel+quote+period+odd+rest);
 cout << "total      " << total << endl;
 return 0;
}

/*
 * Name: print_header
 * Purpose: Display header
 * Receive: Nothing
 * Return: Header
 */

void print_header()
{
  cout << "Name: Mygly\n"
       << "Course: CPS 180 (45911)\n"
       << "Assignment: Homework 9\n"
       << "Purpose: count all vowels, quotes, periods, odd integers and non-whitespace and display them in a table format to the user\n";
}

**Salem** · 03-25-2005

> The only problem i'm having is that it is counting the white space for my all the rest count
So add a case for white space which does nothing
And then the default will be everything else except white space

**MyglyMP2** · 03-25-2005

That's what i did, except i made the case whitespace--, not sure if that makes a difference, but either way, it worked, thanks for the help guys.

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