C++ :: Comparing Words From Two Different Files Using Fstream
Feb 2, 2013
I'm trying to input a html file and copy everything from that file to a new html file with some changes. I need to read the html file word by word and compare them to a file with some keywords. If a keyword matches a word in the html file then it will add italic tags around that word in the output html file. As it is now it doesn't output anything.
Logically I want to read a word from the html file and then compare it to every keyword and output the result.
fileIn = original html file
keyword = keywords file
outFile = html file writing to
std::string str;
std:: string word;
[Code]...
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May 23, 2013
I want the user to enter the word and I want to check if it exists in a text file or not. I tried
int flag=0;
char word[50], input[50];
cout<<"Enter word to search for";
gets(input);
[Code] ....
But it does not seem to be working. Should I make changes to it or is there another way?
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Oct 2, 2014
I'm looking to take in an array of less than 50 strings, and I want to find all of the unique words in that array (omitting the words that are repeated) and then outputting the unique words and unique word count. My code compiles, but my unique array is couting all of the words contained in the original array regardless of uniqueness.
#include <iostream>
#include <string>
#include <stdio.h>
#include <string.h>
using namespace std;
int main() {
cout << "Please type in some words." << endl;
cout << "Type END and return when you are finished." << endl;
[code].....
This is what I get back.
You typed the following 14 words: red, green, blue, red, red, blue, green, blue, orange, red, reg, apple, banana, banana, END,
You typed the following 0 unique words: red, green, blue, red, red, blue, green, blue, orange, red, reg, apple, banana, banana, END
I'm not worried about the unique count yet, I just want to get the unique array containing the correct strings.
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Feb 15, 2013
I'm trying to compare two data files character by character to see if they are the same. If the files are different, the program should print out the line numbers of where they do not match. So far, I have the part where it returns 'T' for when the files are the same and 'F' when they are not. But how should I start where the program prints out the line number where the characters are different? I am thinking of an array but nor sure how to start it.
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Aug 18, 2014
I am working on a airport reservation program and i have run into a brick wall. i want to ask the user its name, gender, passport no, age, destination, and travel class and figure out the day and flight code of the flight which i have saved in a binary file. now every thing works fine except the code and the day.
The programs important section
the flight class Code:
class flights {
char code[9],location[21];
public:
void display();
char *retloc() //to get the Location
[Code] .....
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Dec 20, 2013
I am having a slight issue with the strcmp function. I am comparing string data from two different files. I want the function to output a set of information if the strings are the same and a different set of data if the strings are different. My issue is, the function outputs the data that's the same but not different.
I had an else statement that compared the data if it was NOT equal but it only duplicated the data in the file.
One file is a listing of 100 books with 10 lines of information and an assigned market. The second file is a listing of the markets contained in the books file. However, the books file has a market that is not located in the markets file. The "missing" market is what is not priting or displaying.
// final project2 file
#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
using namespace std;
const int ARRAY_SIZE = 500;
const int MARKET_ARRAY = 6;
ifstream infile, infile2;
ofstream outfile;
[Code] .....
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Mar 6, 2015
I'm trying to read files, count words in the files and go in directories. The problem is how I return numbers of total words and total directories. When it comes to nftw(), I am little confused.
Code: /*
*
*
*
* Usage:
*
* ./countWord <path>
*/
#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
[Code] ....
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Dec 20, 2013
I have written below program to count number of words and lines and print the all the words.
#include <iostream>
using namespace std;
#include<fstream>
#include<string.h>
int main() {
ofstream outfile;
[Code] .....
Its compiling fine but when executed its displaying I infinite times...
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May 19, 2013
I was reading this earlier [URL] ..... and I was trying to figure out how to pick one of the words randomly from my text instead of using all the words in it.
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Feb 18, 2014
For some unknown reason when i try the following code it doesn't create a file. (the program will simply get two inputs from the user and then use http to obtain the html/php text and then output it to a file)
code:
#include <SFML/Network.hpp>
#include <iostream>
using std::cout;
[Code].....
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Apr 4, 2014
I want to design a class that will open a text file and manipulate the data in it. And I have to use all these functions from fstream like ifstream, ofstream, seekg etc. The problem is that I can't get the first part to work (getting my constructor to open the file using ifstream). I've posted my test.h file below.
#ifndef TEST_H_INCLUDED
#define TEST_H_INCLUDED
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
using std::ifstream;
class Test {
[Code] ....
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Feb 14, 2014
So, I am making a name-database-type-thing and I want the user to be able to enter there own file. Like, here:
string fileName;
string name;
cout<<"What is your file name?"<<endl;
getline(cin, fileName);
ifstream nameFile(fileName);
getline(cin, name);
nameFile<<"Name: "<<endl;
Well, that last part is in a loop, so you can enter an unlimited number of names to the .txt file.
So, it won't let me use the string in ifstream. How can I fix this? This maybe unclear, so if it is just say so and I will edit it.
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Oct 16, 2013
I have a file of data where each line consists of 4 parameters (degree, alpha, beta and x) and a value corresponding to these, organized in increasing order of the parameters. Here's the test file I'm using:
0 1 1 0.5 3.5
1 1 1 -0.5 -0.5
1 2 0 0.2 4.5
1 3 0 0.2 -4.5
2 0 0 1.5 2.1
2 1 0 0 5.6
My code is supposed to look for a certain set of parameters (currently set to 1 2 1 1.5, which is not contained in the file) and its value. If it's there (i.e. the file contains the value for the right parameters) the program is done. If not it should calculate the value using a function JacobiPoly() and insert the wanted parameters and corresponding value in the appropriate place in the file.
I have a code in which I think everything works except the writing to file. I use an fstream so I can both read and write and open it with ios::out||ios::in. I'm also aware I need something similar to fseek in between input and output but according to [URL] .... reading and writing to the same file using the same fstream, seekp() should suffice. I'm using seekp(), but the output (in the form inout << (...)) doesn't work.
Here's the code:
fstream inout;
inout.open("inouttest.dat", ios::out | ios::in);
int degree=1, readDeg;
double alpha=2, beta=1, x=1.5, value, readAlpha, readBeta, readX, readVal;
bool foundVal=false;
streampos beforeRead=(streampos)0;
[Code] ....
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Mar 21, 2015
Ive used a similar approach to extract data from a txt file before, however now it seems to crash when i get to the load, below is the code with a NOTE next to where it crashes. This is homework so no code but just information on why it was working for one dataset but not his new one.
/*
The purpose of this program is to read in data and sort with selection and insertion sort. It will read data from file and write to a new file the sorted data
*/
#include <iostream>
#include <fstream>
using namespace std;
bool openFile(ifstream&);
[code].....
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Sep 7, 2012
I want to edit the contents of a file using fstream, but none of the modes in the fstream constructor work for me.
If I use ios::trunc, then the whole file is deleted - but I want to retain the contents and edit it. If I use ios::app, then I can only add data to the end of the file - but I want to edit the data in the middle of the file. If I use ios::ate, then the whole file is deleted again, similar to ios::trunc.
How can I create an fstream object without deleting the contents of the file, whilst still being able to move the pointer arbitrarily around in the file with seekp() (and not just placing it at the end as with ios::app)?
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Jul 6, 2013
I want my function to take 'fstream' object as an input, so the program looks like this:
Code:
#include <fstream>
using namespace std;
void test(fstream a){
a.open("test2.txt");
a << "123" << endl
[Code] ....
But I get error: 'std::ios_base::ios_base(const std::ios_base&)' is private|
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Nov 9, 2012
I did some of the projects using STL container and it is pretty much efficient to retrieve the data's information quickly (i.e. sets, sets & maps). I read many C++ OOP book and none of them make me clear about the Link Between (STL) Container and (Fstream) File I/O. Can they link together ?
I am going to design a small Library Book Management Project. I am planning to develop it using the STL Algorithms & containers. Objective of this project is to keeping the records of books issued and deposited by students in a particular date. User will be given a facility to retrieve student's information, book information and he/she can modify/update specific book's, student's information by changing issue date, deposited date, Book's publication etc.
My intention is to create a File I/O where user can input & update/modify daily transaction inside the file called (xx.dat) file in project directory. Is it possible to create 'set' container inside the file (xx.dat) ? Or, It's impossible ? Or, do i have to do this in other way?
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Jul 25, 2013
How to forbid file replacing in fstream library for C++?
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ofstream myfile;
[Code] ....
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Dec 16, 2014
I'm trying to make a simple phonebook app that can show contacts, add, and delete. I'm pretty new to C++ and fstream functions, deleting a line in my bool erase() function?
#include <iostream>
#include <conio.h>
#include <string>
[Code].....
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Jan 20, 2013
other posts talk about the fopen function and don't really give any solutions to this the var that has the file path is a char* and has been converted from a system::string^ it is completely valid when I paste it in windows bar.
Code:
private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e) {
if(textBox1->Text[0] == (char)'' || textBox2->Text[0] == (char)''){
MessageBox::Show("Please select a valid m3u and path", "Problem",
MessageBoxButtons::OK, MessageBoxIcon::Exclamation);
[Code]....
it crashes right at the pile.open() function call when I put breakpoints in it says , debug assertion failed and shows me the fclose.c file location and Expression: (stream != NULL)
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Feb 7, 2014
I've been having this odd problem when I write a file byte by byte, when I write a byte (dec)10 it adds a (dec)13 in front of it, and as far as I can tell, this is the only byte value that does this.
and most annoyingly, I can't read that (dec)13 with fstream, the only reason I know it's adds it, is because I used an external hex editor.
here is the code that causes the problem:
Code:
#include <fstream>
using namespace std;
int main()
{
[Code]...
but the output file reads '0D 0A' (that's in hex, '13 10' in decimal) when viewed in a hex editor. no other number (that I've tried) adds that extra 13.
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Jul 9, 2014
fstream ifs;
ifs.open ("data.str", ios::binary | ios:ut);
char *data1 = "data1";
char *data2 = "data2";
ifs.write(data1, strlen(data1));
ifs.write(data2, strlen(data2));
when i this,data2 is not going under data1, i thought each write starts on a new line?
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Jun 10, 2013
If the filename below is a directory, then the following loop goes to infinite.
std::ifstream in;
in.open(filename, std::ifstream::in);
if(in.fail()) return;
[Code].....
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Jan 1, 2014
Im about to program a RPG and, of course, the player has got an inventory. The items in this inventory are stored in a linked list and have IDs in form of strings.
player.cpp: (just the most relevant)
#include <list>
#include <string>
using namespace std;
[Code] ....
Of course, when the player saves the game, the inventory has to be saved too.
game.cpp(just the m. R.)
#include <fstream>
using namespace std;
class CGame{
[Code] .....
Now, in my code I write the linked list into the file savegames.sav
void CGame::save(CPlayer* player){
m_out.open("savegames.sav", ios::out);
m_out.write((char* ) &player->m_inventory, sizeof(player->m_inventory));
m_out.close();
}
In another function i load the list:
void CGame::load(CPlayer* player){
m_in.open("savegames.sav", ios::in);
m_in.read((char* ) player->m_inventory, sizeof(player->m_inventory));
m_in.read();
}
And when i access the loaded linked list with the .empty() function or so, Windows says the following:
<Mygame.exe> funktioniert nicht mehr (in English: doesnt run anymore).
I tried so much to fix that but i dint reach my aim.
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Jun 5, 2014
I have been trying to figure this out for a text based game. Lets say your money is 500. Then you save your game, but when you start the game the starting is 50, so when you load it, you still have 500 money, I tried lots of test, and im having trouble?
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Jan 15, 2014
I need to a simple example for writing class' objects to a text file using fstream , I tried to search the forums and I found binary examples but not for to a text file.
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