FILE I/O

[krazor]

Hi i'm new to this forum so please forgive me if i post this incorrectly.

i am writing a program as an assessment but i cant get my head around it.
what i need to do is have 2 files 1 whihc has a text document with words or a story type structure and in a second document words which replace other words within the first document.

etc.

Doc1 Story.


Hello i have a nice house in the woods, It is a lovely place to live.
However i live alone.

doc2_WordReplacer

hello:hi
a:in
live:stay



etc. what i am having issues with is storing the first doc into a string, when i wrote this the first time i had the entire text doc stored as char's but this wouldn't really help my issue. doc 2 would replace the words in doc1 based on left to right separated by a colon. would someone kindly explain the getline() and why it does not get the first line, it gets the second line in my tests (only tested with 2 lines). but it only gets the second line of the document. some suggestions would be kind.

  #include <iostream>
#include <string>
#include <fstream>
#include <vector>

using namespace std;


void PerformReplacement(string proseFilename, string replacerFilename, string outputFilename);


int min(int a, int b)
{
	if (a < b)
		return a;

	return b;
}


int main()
{
	string proseFilename;
	string replacerFilename;
	string outputFilename;

	//Read file names from user input.
	cout << "Enter the name of your prose file:" << endl;
	cin >> proseFilename;
	cout << "Enter the name of your replacer file:" << endl;
	cin >> replacerFilename;
	cout << "Enter the desired name of your output file:" << endl;
	cin >> outputFilename;
	
	//Print names as they have been entered.
	cout << "Text file name set to '" << proseFilename << "', replacer file name set to '" << replacerFilename << "'." << endl;
	cout << "Output file name set to '" << outputFilename << "'." << endl;

	//Do the actual replacement.
	PerformReplacement(proseFilename, replacerFilename, outputFilename);
	
	cin.get();
	return 0;
}
//This function currently does nothing - that's what you have to change.
void PerformReplacement(string proseFilename, string replacerFilename, string outputFilename)
{
	
	//open a file
	ifstream fileIn;
	fileIn.open(proseFilename);

	//open replacer file
	ifstream replacer;
	replacer.open(replacerFilename);

	//open output file
	ofstream fileout;
	fileout.open(outputFilename);
	fileout << proseFilename;

	
	//read in some text
	string line;
	//getline(fileIn, line); //read in the first line
	while (fileIn.eof == false)
	{		
		getline(fileIn, line);		
	}
	cout << line << endl;
	//compare characters 
	//Vector is a list (Dynamic array)
	vector<string> wordList;
	string curWord;

	//use isalpha(line[i])
	for (int i = 0; i < line.size(); ++i)
	{
		if (isalpha(line[i]) && line[i] != ' '  && line[i] != ',' && line[i] != '\'')
		{
			//Add one character to the current word
			//line[i] is the character in slot i that we are currently looking at now.
			curWord = curWord + line[i];
		}

		else if (curWord.size() > 0)
		{
			//add the current word into our list of words
			//our *Vector* of words
			wordList.push_back(curWord);
			//empty the current word variable otherwise it will have the previous word in the variable still!
			curWord = "";
		}		
	}

	if (curWord != "")
	{
		wordList.push_back(curWord);
	}
	//print different order
	//print all words in order
	for (int i = 0; i < wordList.size(); ++i)
	{
		cout << wordList[i];		
		fileout << wordList[i] + " ";
	}
	
//Testing Code
/*
	char let;
	string word;
	vector <string> dict;

	fileIn >> word;
	cout << endl << word;

	cin.get();
*/
}

[krazor]

i seemed to have fixed part of this issue, but i still get one issue with this that i have not been able to figure out. it does not seem to detect newline characters, i had searched the net a bit but it seems that the getline() skips all whitespace and newline characters, i would like to confirm this and may ask how i can get around this. i had tried using

'\n' '\r' and char(012)

at the moment i'm just trying to get everything printed in CMD and can then transfer it later to a text file.

Thanks in advanced for the help.

//open a file
	ifstream fileIn;
	fileIn.open(proseFilename + ".txt");

	//open replacer file
	ifstream replacer;
	replacer.open(replacerFilename + ".txt");

	//open output file
	ofstream fileout;
	fileout.open(outputFilename + ".txt");
	//fileout << proseFilename;

	
	//Dictionary
	vector<string> wordList;
	vector <string> dictionary;
	string word, nword;
	int n = 0;
		

	//compare characters 
	//Vector is a list (Dynamic array)

	//read in some text
	string line = "";	
	cout << endl << endl << "		Document 1		" << endl << endl;


	while (!fileIn.eof())
	{
		getline(fileIn, line);
		//fileout << line << endl;
		//cout << line << endl;
		

		//store all seperate words into a new position in a vector

		for (int i = 0; i < line.length(); i++)
		{	

			if (line[i] != '\n' || line[i] != char('\n') || line[i] != char(012))
			{

			}
			else
			{
				cout << "ENTER" << endl;
			}


			if (isalpha(line[i]) || line[i] != ' ' || line[i] == '!' || line[i] == '?' || line[i] == '.' || line[i] == ',' || line[i] == '$' || line[i] == '%' || line[i] == '&' || line[i] == '"' || line[i] == ':')
			{
				word = word + line[i];
				//cout << word << endl;				
			}

			else if (word.size() > 0)
			{
				if (word == "how")
				{
					//cout << endl << "FOUND HOW" << endl;
					
					//word = "THISISASHAOO";
					wordList.push_back("THISISASHAOO");
					//wordList.push_back(word);
					word = "";
				}			

				else {

					cout << word;
					wordList.push_back(word);
					word = "";				
				}
			}
			
		}
	}
	
	for (int i = 0; i < wordList.size(); i++)
	{
		fileout << wordList[i] + " ";
	}
	

	fileIn.close();
	cout << "count: " << n;
	cout << "Read file completed!!" << endl;
	
	cin.get();
}

[jlb]

Do you realize that getline() extracts the delimiter from the stream and discards this character?

i had searched the net a bit but it seems that the getline() skips all whitespace and newline characters, i would like to confirm this

No getline() doesn't skip all whitespace characters. The purpose of getline() is to get a line of characters that may or may not contain whitespace characters. It stops processing the stream when it encounters a new line character. This newline character is extracted from the stream and discarded. Any other whitespace characters are extracted from the stream and placed into the stream.