Re: Simple noobish question

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Tue, 22 May 2007 12:50:54 -0400
Message-ID:
<f2v71f$crg$1@news.datemas.de>
theronnightstar@gmail.com wrote:

I am having a problem with a small bit of code. I can't figure out why
it won't work. Here:

//code:
#include <iostream>
#include <fstream>
#include <ctype.h>
#include <string>

using namespace std;

int main()
{
ifstream file_in;
ofstream file_out;
string word_in;
int old_total = 0;
int new_total = 0;
int x = 0;

^^^^^^^^^^^^

Drop this declaration of 'x'.

file_in.open("words.list");
file_out.open("words.out");

while ( !file_in.eof() )
{
getline(file_in, word_in);
old_total++;
int good = 0;


I believe here should be the 'x', not 'good'.

for ( int i = 0; i < word_in.size(); i++ )
{
if ( isalpha( word_in[i] ) != 0)
{
continue;
}
else
{
x = 1;
break;
}
}
if ( x == 0 )


Since 'x' is never reset to 0, you're always falling into the
'continue' part.

{
file_out << word_in << endl;
new_total++;
}
else
{
continue;
}
}
cout << old_total << " lines in the original file." << endl;
cout << new_total << " lines in new file." << endl;
cout << old_total - new_total << " lines of difference." << endl;

return 0;
}
//code

All this is supposed to do is run through a list of words from one
file and put the one that only have the standard 26 letters of the
English alphabet into another file. It works fine until it hits the
first word with a non-english character, at which time it finishes and
exits. The output is this:

72411 lines in the original file.
589 lines in new file.
71822 lines of difference.

Obviously the new file should have a whole lot more lines than that.
At line 590 is the word Asunci?n. It is such a minor thing but it is
driving me up a wall none the less. Any comments would be much
appreciated.


Use tracing to see how your code executes. Or a debugger.

V
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