can anyone debug my program and get it to run. - #include <fstream>
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#include <iostream>
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#include <string>
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#include <cstdlib>
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#include <map>
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using namespace std;
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string getInputFileName(); // a function to prompt for the complete file name
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int numCharsInFile( ifstream &in, int &numLines ); // a function to count the
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// number of characters and
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// lines in a text file
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int numWordsInFile( ifstream &in, int &numWords ); // a function to count words in file
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string get_tokenInFile( ifstream &in, int &numWords ); // a function to count frequency of words in file
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main ()
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{
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char c;
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int nLines, // number of lines in the text file
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nChars, // number of characters in the text file
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avgCharsPerLine, // average number of characters per line
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nWords;
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string nWords1; // number of words in the text file
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ifstream inFile; // handle for the input text file
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string fileName; // complete file name including the path
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fileName = getInputFileName(); // prompt and obtain the full file name
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inFile.open(fileName.c_str()); // try to open the file
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if( !inFile.is_open() ) // test for unsuccessfull file opening
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{
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cerr << "Cannot open file: " << fileName << endl << endl;
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exit (0);
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}
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nChars = numCharsInFile( inFile, nLines ); // determine the number of lines
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// and characters in the file
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nWords = numWordsInFile( inFile, nWords ); // determine the number of words
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nWords1 = get_tokenInFile( inFile, nWords1 ); // determine the frequency of characters
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avgCharsPerLine = nChars / nLines;
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cout << "The number of characters in the file: " << fileName
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<< " is = " << nChars << endl << endl;
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cout << "The number of lines in the file: " << fileName
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<< " is = " << nLines << endl << endl;
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cout << "The number of Words in the file: " << fileName
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<< " is = " << nWords << endl << endl;
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cout << "The average number of characters per line in the text file: "
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<< fileName << " is: " << avgCharsPerLine << endl << endl;
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cout << "The frequency of Words in the file: " << fileName
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<< " is = " << nWords1 << endl << endl;
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cin>>c;
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inFile.close(); // close the input file
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}
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string getInputFileName()
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{
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string fName; // fully qualified name of the file
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cout << "Please enter the fully qualified name of the " << endl
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<< "input text file (i.e. including the path): ";
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cin >> fName; // cannot handle blanks in a file name or path
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cout << endl;
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return fName;
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}
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int numCharsInFile( ifstream &in, int &numLines )
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{
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int numChars = 0;
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char ch; // character holder;
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numLines = 0; // initialize the number of lines to zero
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while ( in.get(ch) ) // get the next character from the file
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// the function get will also get whitespace
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// i.e. blanks, tabs and end of line characters
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{
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if (ch != ' ' )
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{
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if(ch != '\n')
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numChars++;// increase the count of characters by one if ch is NOT '\n' AND NOT a blank space
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else
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{
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numLines++; // increase the count of lines by one if ch IS '\n'
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}
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}
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}
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numLines += 1; // for some reason it needs to add one and the results are correct
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return numChars; // return the number of characters in the file
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}
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int numWordsInFile( ifstream &in, int &nWords)
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{
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in.clear();
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in.seekg(0, ios_base::beg); // IS THIS CORRECT UBERGEEK?
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int numWords = 0 ;
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char ch;
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while (in.get(ch))
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{
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if ( ch == ' ' || ch == '\n' || ch == '\t' )
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numWords++;
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}
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return numWords+1; // for some reason again it needs to add one to work properly
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}
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string get_token( ifstream &in, string nWords1)
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{
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string token;
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char ch;
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while (in.get(ch))
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{
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char c;
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in.get(ch)>> c;
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if ( isalpha( c ) || c == '\'' )
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token += c;
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else if ( token.size() )
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return token;
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}
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return token;
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}
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string token = get_token( infile );
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if ( token.size() == 0 )
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break;
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map<string, int>::const_iterator ii = frequency.find( token );
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if ( ii == frequency.end() )
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frequency[ token ] = 1;
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else
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frequency[ token ]++;
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multimap<int, string> counts;
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for ( map<string, int>::iterator ii = frequency.begin() ;
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ii != frequency.end();
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ii++ )
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counts.insert( pair<int,string>( (*ii).second, (*ii).first ) )
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set<string> used_codes;
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for ( multimap<int, string>::reverse_iterator jj = counts.rbegin() ;
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jj != counts.rend() ;
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jj++ )
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{
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string code = create_star_code( (*jj).second, used_codes );
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used_codes.insert( code );
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codes[ (*jj).second ] = code;
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cout <<(*jj).second <<" " <<code <<" " <<(*jj).first <<endl;
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}
3 7793
Help us help you.
Put your code in [ code ] tags and describe what problem you are having with this program.
Help us help you.
Put your code in [ code ] tags and describe what problem you are having with this program.
The code works but my last function to count the frequency of each word in a txt file is not working can you please help me i need this program to graduate.
Seriously:
Help us help you.
Put your code in [ code ] tags and describe what problem you are having with this
program.
What, specifically, is happening when you try to run and/or compile this program? Compiler errors? Incorrect results?
Look at your code in the [ code] [/code ] tags below (much easier to read that way, isn't it?) -
#include <fstream>
-
#include <iostream>
-
#include <string>
-
#include <cstdlib>
-
#include <map>
-
-
using namespace std;
-
-
-
-
string getInputFileName(); // a function to prompt for the complete file name
-
-
int numCharsInFile( ifstream &in, int &numLines ); // a function to count the
-
// number of characters and
-
// lines in a text file
-
-
int numWordsInFile( ifstream &in, int &numWords ); // a function to count words in file
-
-
string get_tokenInFile( ifstream &in, int &numWords ); // a function to count frequency of words in file but this function isn't working
-
-
-
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main ()
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{
-
-
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char c;
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int nLines, // number of lines in the text file
-
nChars, // number of characters in the text file
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avgCharsPerLine, // average number of characters per line
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nWords;
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string nWords1; // number of words in the text file
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-
-
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ifstream inFile; // handle for the input text file
-
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string fileName; // complete file name including the path
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fileName = getInputFileName(); // prompt and obtain the full file name
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inFile.open(fileName.c_str()); // try to open the file
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if( !inFile.is_open() ) // test for unsuccessfull file opening
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{
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cerr << "Cannot open file: " << fileName << endl << endl;
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exit (0);
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}
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nChars = numCharsInFile( inFile, nLines ); // determine the number of lines
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// and characters in the file
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nWords = numWordsInFile( inFile, nWords ); // determine the number of words
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nWords1 = get_tokenInFile( inFile, nWords1 ); // determine the frequency of characters
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avgCharsPerLine = nChars / nLines;
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cout << "The number of characters in the file: " << fileName
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<< " is = " << nChars << endl << endl;
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cout << "The number of lines in the file: " << fileName
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<< " is = " << nLines << endl << endl;
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-
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cout << "The number of Words in the file: " << fileName
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<< " is = " << nWords << endl << endl;
-
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cout << "The average number of characters per line in the text file: "
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<< fileName << " is: " << avgCharsPerLine << endl << endl;
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cout << "The frequency of Words in the file: " << fileName
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<< " is = " << nWords1 << endl << endl;
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cin>>c;
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inFile.close(); // close the input file
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}
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string getInputFileName()
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{
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string fName; // fully qualified name of the file
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cout << "Please enter the fully qualified name of the " << endl
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<< "input text file (i.e. including the path): ";
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cin >> fName; // cannot handle blanks in a file name or path
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cout << endl;
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return fName;
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}
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-
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int numCharsInFile( ifstream &in, int &numLines )
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{
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int numChars = 0;
-
-
char ch; // character holder;
-
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numLines = 0; // initialize the number of lines to zero
-
-
while ( in.get(ch) ) // get the next character from the file
-
// the function get will also get whitespace
-
// i.e. blanks, tabs and end of line characters
-
-
{
-
if (ch != ' ' )
-
{
-
if(ch != '\n')
-
numChars++;// increase the count of characters by one if ch is NOT '\n' AND NOT a blank space
-
else
-
{
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numLines++; // increase the count of lines by one if ch IS '\n'
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}
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}
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}
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numLines += 1; // for some reason it needs to add one and the results are correct
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return numChars; // return the number of characters in the file
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}
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-
-
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int numWordsInFile( ifstream &in, int &nWords)
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{
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in.clear();
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in.seekg(0, ios_base::beg); // IS THIS CORRECT UBERGEEK?
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int numWords = 0 ;
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char ch;
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-
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while (in.get(ch))
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{
-
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if ( ch == ' ' || ch == '\n' || ch == '\t' )
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numWords++;
-
-
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}
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return numWords+1; // for some reason again it needs to add one to work properly
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}
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string get_token( ifstream &in, string nWords1) //this is where i'm having the problems
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{
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string token;
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char ch;
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while (in.get(ch))
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{
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char c;
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in.get(ch)>> c;
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if ( isalpha( c ) || c == '\'' )
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token += c;
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else if ( token.size() )
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return token;
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-
-
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}
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return token;
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}
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string token = get_token( infile );
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if ( token.size() == 0 )
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break;
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map<string, int>::const_iterator ii = frequency.find( token );
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if ( ii == frequency.end() )
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frequency[ token ] = 1;
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else
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frequency[ token ]++;
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multimap<int, string> counts;
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for ( map<string, int>::iterator ii = frequency.begin() ;
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ii != frequency.end();
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ii++ )
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counts.insert( pair<int,string>( (*ii).second, (*ii).first ) )
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set<string> used_codes;
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for ( multimap<int, string>::reverse_iterator jj = counts.rbegin() ;
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jj != counts.rend() ;
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jj++ )
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{
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string code = create_star_code( (*jj).second, used_codes );
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used_codes.insert( code );
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codes[ (*jj).second ] = code;
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cout <<(*jj).second <<" " <<code <<" " <<(*jj).first <<endl;
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}
get_token() ends at the closing brace immediately following return token. All the code beyond that brace is outside of any function. Surely that's not what you want?
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