C :: Splitting A File Info Multiple Chunks
Apr 19, 2013
I have a tab separated file that consists of 10 columns. (classical txt file).the third column is the one interesting to me it consists of some strings like :
Code:
2313 234ffer string1 sd33 ...
2313 234ffer string1 sd33 ...
2313 234ffer string2 sd33 ...
2313 234ffer string1 sd33 ...
2313 234ffer string2 sd33 ...
2313 234ffer string1 sd33 ...
2313 234ffer string3 sd33 ...
according to the value in the third column i wish to split my text file sot that i have files string1.txt string2.txt and string3.txt such that each file contains the whole line. how to do it in c++ with hash tables (maps) and all those fancy tools all ready and waiting for me to use them but in c i am crippled.
Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "strmap.h"
[code]...
My idea was to first go through the file, hash all values in tht third column so i get a unique set of elements and then for each distinct string(element) in the third column create a file pointer, then go once more through the file and as I encounter a specific string(element) type, write the whole line into the appropriate file.
View 9 Replies
ADVERTISEMENT
Jan 30, 2013
I'm trying to make a program that you input your login info and it writes that info to a text file. Then, later on once I get my problem fixed, the program will read the info to the user. my code is as follows(the input part is a bit lengthy):
// Password Log
#include <iostream.h>
#include <fstream.h>
#include <string>
#include <time.h>
using namespace std;
ofstream login;
[Code] ....
What my problem is when I choose "Input new login info" it automatically inputs I have no clue, and calls next program.
View 3 Replies
View Related
Sep 12, 2014
What is the right syntax for implementing the .cpp of a template class?
Consider this LinkedList.h file:
Code: #include<iostream>
#include"Iterator.h"
template <class T>
class LinkedList {
[Code] ....
How should the implementation for the LinkedList constructor, for example, should look like in the LinkedList.cpp file?
I tried this:
Code: #include "LinkedList.h"
template <class T>
LinkedList<T>::LinkedList<T>() {
// constructor
}
LinkedList<T>::~LinkedList<T>() {
// destructor
}
But the compiler wouldn't accept it.
View 4 Replies
View Related
Jul 1, 2014
I am trying to write a function that extracts chunks of numbers from a stream (ie if i had "ui33ui24ui23hjdwejf" it would extract the chunk 33), and its finished, but it wont compile. errors here: [URL] ...... its only one line in an include file, but im stumped. anyways, this is the most updated version of the code: [URL] .....
View 1 Replies
View Related
Oct 21, 2014
im new to programming and new to C, just started with arrays and im somewhat stucked, where i have a .txt file which contains items and prices. I want the items and the prices split into 2 different arrays
The .txt looks like that:
orange 0.89
banana 0.79
apple 0.59
I now want to split the items in a char items[100][100] and float prices[100]. how to split this, preferably with fscanf ?
View 7 Replies
View Related
Jan 18, 2015
I need to transfer the content from the file text.txt to file sort.txt . The data in the text.txt is "struct" (info about people)but the same data needs to be sorted by the name and sent to sort.txt by using a function .
View 9 Replies
View Related
Feb 27, 2013
I am looking for a way that I could check the information of a folder and a drive, to show the data size and storage amount (KB, MB, GB). This is so that I can compare the size of a folder to the storage capacity of a disk drive.
View 2 Replies
View Related
Oct 10, 2014
I'm trying to open a text file with the name "text.txt", for the purpose of only displaying in the console an specific part of the text file. For example, if I got "This is a test [TEXT] This is the message that should display [/TEXT] this is the end of the file", I want only "This is the message that should display" to be the output, the thing is that I can't imagine anyway of doing that. what I should do?
View 5 Replies
View Related
Jan 8, 2014
I'm a beginner at programming and I'm not sure how to read in information from a text file. What I want to do is take a text file which contains around 20 rows and 3 columns of numbers, and put these into an array which can then be used for performing calculations. How do I do this? Would I need to declare the size of the array beforehand? When accessing my file, do I include the full address?
The relevant part is lines 29-33:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/* this is a simpllified code using BEM equations */
main()
[Code] ....
View 13 Replies
View Related
Dec 21, 2013
the info gotten from the text file are all wrong, i can't find any problem with my code,
Code:
#include<stdio.h>
FILE *f;
typedef struct prd {
char name[30];
char code[30];
char idt[30];
float price;
[code]....
View 7 Replies
View Related
Jan 18, 2013
im trying to make a tool that can change the version of the file (.exe)
UpdateResource(hResource, RT_VERSION, MAKEINTRESOURCE(1), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPVOID) lpBytes, dwSize);
i know how to update the rcdata of the resource
my problem is i dont know what to insert to it using (LPVOID) lpBytes is it a .txt ? .rc ? is it a binary ? etc.
View 1 Replies
View Related
Apr 19, 2015
Your goal is to open this struct of students (the binary file). Once open, the first job is to print out each student. Afterwards, display all students with a gpa of 3.5 and higher. Finally, display all students with the major of Computer Science or Game Programming. Be sure to title each category of items.
He gave us a .cpp file and a .h file that we're suppose to use to run the program. He doesn't want us to change his original code, except we can add the needed code to run his code (i.e. Struct & Main).
My problem is that I get an Abort() crash message in VS2013 when I try to run it. Now, in line 95 of the cpp file if I replace the char* with "", it runs fine showing the GPA with blank entries for the other print parameters. I've read the Binary Files chapter of the Pearson textbook several times and it doesn't have anything to say about working with char pointers.
Header file:
#pragma once //Professor's code
struct StudInfo //Start of my code {
char* fName;
char* lName;
char* major;
double gpa;
[Code] ....
View 7 Replies
View Related
Aug 13, 2013
I'm intrested in creating programs of games and such which learns while playing and saving the information for further use. For example a tic tac toe game where the program saves evry game it won or lost and creates a tree of some kind that store the information of the game and save it in a file when the program is being quit. The problem i'm having is how to save a tree in a file efficently.
View 2 Replies
View Related
Jul 1, 2014
I have a program that gives the user the option to create an employee ID, name, address and so on. It also has the option to search employee by employee ID.
What I want to know is how to add and replace employee info. For example employee changes address. Also how to delete employee information from text file.
Here's my code:
//This program uses file input and output for an employee information system.
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int main(){
ifstream inFile; //declare ifstream as inFile and ofstream as outFile
ofstream outFile;
[Code] ....
View 1 Replies
View Related
May 22, 2014
I'm having trouble in getting my program to read from a file and put all the proper data into its proper class variables. I have a class (called Champion) that has string variable for a name and a vector of strings for items. I also have a vector of Champion that holds multiple champions. Here's my code:
Champion.hpp
#ifndef CHAMPION_HPP_INCLUDED
#define CHAMPION_HPP_INCLUDED
#include <iostream>
[Code].....
View 3 Replies
View Related
Apr 4, 2013
I'm trying to read information from a file and put the data into vectors of its appropriate type. For example: the file will have an int ID, string firstname, string lastname, double salary, int hours_per_week, and string work_position. All this data is separated by ";". I don't know how to read this file into the appropriate vectors: vector<int> ID, vector<string> fname, vector<string> lname, vector<double> salary, vector<int> hpw, vector<string> work.
View 8 Replies
View Related
Dec 8, 2014
I am trying to use a combination of windows batch scripts as well a C++ program to put users data into one single .CSV file. Right now, I have a batch file that will output data from the command line into multiple .txt files. These files are mac.txt, serialnumber.txt, computermodel.txt, and computer name.txt. What I want to do, is to have users run the batch file, which will in turn run the .exe C++ file which will concatenate all their data into one file, computerinfo.csv. The file format for this file would be to have the mac address, serialnumber, computer model, and computer name all in their own column.
My main issue is that these individual files don't have the format that I would like, but based on the command prompt functions, there isn't really any good format. For example, the mac.txt file has the following format:
Physical Address Transport Name
=================== ==========================================================
xx-xx-xx-xx-xx-xx DeviceTcpip_{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
yy-yy-yy-yy-yy-yy Media disconnected
zz-zz-zz-zz-zz-zz Media disconnected
but all I really want is xx-xx-xx-xx-xx-xx
The other files have other issues with format, but if I can figure out this one then the others should be a piece of cake.
Also, I want the output of this to all go in one row, and as other users run this file, they will go into new rows without touching the rows above.
View 1 Replies
View Related
Nov 9, 2014
What I want to do is create a file that will ask the user to enter his info,n then store it in a text file The screen will ask the user if he wants to update his info. if he says yes then the screen will be cleared and the old info will be printed on the screen. The user will enter his new info that will be stored in a new file. My problem is that once the user finishes entering his input the program just closes D: and the rest of the program won't run.
Code:
int main()
{
string ans;
ofstream Xfile("original.txt");
cout <<"Enter your name and address please"<<endl;
cout<<"Press Ctrl+Z+Enter when you are done"<<endl;
string name_and_street;
[Code]...
View 3 Replies
View Related
Apr 10, 2013
I have to create a small data base for a shop. One of the functions i am creating is taking a customers ID and scanning that through a text file and to print out the info about that customer. What i am having trouble with is where do i insert the string compare in my program?
//declaring array for input of customer ID
int customer_ID [20];
printf("Please enter the customer ID:");
gets( customer_ID ); //users input stored in the array
[Code] .....
View 2 Replies
View Related
Nov 12, 2014
I have been asked to create a program that accesses an inventory file done in excel, look for a alpha-numeric code, which will be inputed by the user, and return to the user informations related to the position of that code, and informations related to the header of the column in which the code resides.
An example of the function I need the program to perform would be:
User inputs: 1429-R1
And the program returns: Marco's 6A, 8/21/2014, 3/7/2014.
using the following example of file:
Marco's 6A
Assessment 8/21/14 3/7/14
1584-R1 1584-R1 1584-R1
1461-2R1 1461-2R1 1461-2R1
1429-R1 1429-R1 1429-R1
View 1 Replies
View Related
Jun 4, 2013
I have written a C++ program I have multiple of CSV file used as input, which I open one at a time and close it after extracting data to a output file which is the only file.
I run getline(inFile,line);
outFile << line << endl;
I run this code, and only part of it is goes to the output file I got, also have spacing randomly to specific file and inconsistent
But when I slower the code, like system("Pause") in the loop, I can get extract what I want perfectly....
Is my program running to fast, why getline would be skipping part of what things I want?
View 11 Replies
View Related
Nov 1, 2013
What is the simpliest way to split 2D array - for example - Split 9x9 2D array to - 3x3 2D arrays (squares).
View 5 Replies
View Related
Jun 7, 2014
I have been programming a lot in Java lately which made me forget a few things in C++. So I tried doing a few simple things. I am having a hard time splitting up a mega string of 6000 names. However I did break them apart as far as their appearance in the console. But I tested it by placing it into a vector and it is still a mega string.
Code:
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
class CalulateNames
[Code] ....
} I have tried using the following as well with no luck
Code:
str.replace();
str.erase();
I am hoping to finding something like in Java or the ability to handle it this way.
Code: line.split(",");
View 13 Replies
View Related
Jan 15, 2013
The following code shows bad memory access error (segmentation fault) when I run it. It does this right after it asks for name and the user has entered it.
#include <iostream>
#include <sstream>
using namespace std;
struct Name {
string first;
string last;
[Code] ....
View 4 Replies
View Related
Mar 18, 2015
My code
#include<iostream>
#include<string>
using namespace std;
string strip(string message) { //removing elements that is not A-Z or a-z
string stripped;
for(int x = 0; x < message.length(); x++) {
[code]....
The output in my code shows like this:
[e]Encipher
[d]decipher
[x] Exit
Enter choice: e
Enter message to Encrypted:
i love you
Enter Key:
love
The encrypted message is: tzjzpmjy
Back to main menu? (y/n):
However , I want the output to display the spaces as the user's input.
ex. The encrypted message is: t zjzp mjy.
This is the same as i love you in the user's input.
View 14 Replies
View Related
Feb 18, 2014
i have an array of strings that i need to split into 2 different string.
Code:
string title = " "Rebecca" "Alfred Hitchcock" ";
so far all the data is in one string called title
//need to break them into 2 strings, title and director
// title should contain = Rebecca
// director should contain alfred hitchcock
which string fuctions can i use to split these 2 and remove the quotes???
View 6 Replies
View Related
