I made a program which read a text file and copies text in an another text file if line doesn't contain a specific string(code is below), how can I make it after it finds out a line which contains this string to skip n lines ? I tried to use a for loop but without any luck..
Here is what I did until now :
rfile.open("test.txt");
wfile.open("out.txt");
while(std::getline(rfile,line)){
n=line.find(name);
if(n == std::string::npos){
wfile<<line<<std::endl;
}
//Here is the "problem"
I am trying to read lines from a .txt file like this:
// "file.txt" This is the first line. This is the second line.
To do this, I tried using the following code:
int main() { std::ifstream data; data.open("file.txt");
[Code] ....
The output I want is:
This is the first line. This is the second line.
However, all I am getting is:
This is the first line.
I can't quite see why this isn't working. I am decently familiar with file streams in C++, so I thought I would know what I was doing, but apparently not.
----------------------------------- 45(here is space)string and other shit is here 454(here is space)string and other shit is here 4121(here is space)string and other shit is here 77(here is space)string and other shit is here 45545(here is space)string and other shit is here 1122(here is space)string and other shit is here -----------------------------------
how do i get exactly that number in every line start? and compare but i jus tneed to get them to variable so ?
private void open(object sender, EventArgs e) { OpenFileDialog openDialog = new OpenFileDialog(); if (openDialog.ShowDialog() == DialogResult.OK) { string[] lines = File.ReadAllLines(openDialog.FileName); int k = 0; while (k < lines.Length)
[Code] ....
So in this code, the user basically opens a text file from the dialog. Then the file gets read on all the lines and gets stored in an array. Now the reason I did this is because there are more fields of text boxes I have to fill in after I fill in the table (6x3). I'm getting an out of bounds error however.
This is a sample text file that is being used. As you can see all the lines from start up until (excluding "110") will be used in the table. Now I want to read the last lines in this text file and put it in another text box. How do I do that?
I have a .txt file that contains, together with a few characters, columns of values that I want to save in different files like is written in the program (file 1, file2, file3 - a with x, b with y, c with z). The pattern of the source text file is like this:
Until now I could manage to split the files, but the output gives me only zeros. First the program count the number of lines of the read text file, then it should display the desired columns of double values in three other .txt files.I've got for the three .txt files columns like this:
I'm creating a program to read information about class schedules at my school, reformat the information, and allow the user to search for specific semesters. There are eight fields of information. I'm reading the info from a text file using eight parallel arrays, but I'm having trouble declaring the arrays. I can run this code in one compiler (Dev-C++) with no problems, but I get errors when trying to compile it using Visual Studio stating that arrays must be declared with a constant value. I have a loop to run through the text file, with a counter to increment with each subsequent line, then I create a constant int equal to the counter, and declare the arrays of size equal to the constant int. Here's the section of code in question:
// Counting the number of lines in the text file inFileForLines.open("CIS225HW1DA.txt"); string countLine; int numberOfLines = 0; //Discarding the first line of the text file containing only column headings getline(inFileForLines, countLine);
I am trying to print a specific line from a textfile
e.g I have a text file called info.txt and inside it contains the id,item name, price, quantity
Code: 1,shirt,100,10 2,pants,50,9 3,pen,20,8
I know how to find a specific word at the line in the file but how do I find and print out the specific line e.g(print out just the entire contents of line 2)?
Code: string temDescription; ofstream fout; int curLine = 0;
So I'm working on program I had in Windows Form Application.
I have a combobox that lists the years 1981-2013. Beside it, a simple Enter button.
I wanted to be able to assign individual lines of text to each year that would be displayed in the message box.
Like if the user selects 1981, clicks Enter and the message box displayed "In the year of 1981.." but if they select 1982, the message box displayed "In the year of 1982.." I have everything else I want working, except that I can't figure out how to assign different lines of text to different years.
This code works, but not fully This code reads com ports, when a string is available, I check to see if it contains some keywords defined in array If it does, i print out the string itself.
The problem i am having is that it seems to stop processing the data at some point but I do know that there are more strings to be read. So, it does keep reading more lines of data
using System; using System.Text; using System.Collections.Generic;
I am trying to make a messageBoxButtons dialog with the 'yes, no' buttons. Im having trouble because of the multiple lines and parameters already in the message, this means that when i declare the messageBoxButtons.YesNo and the title - it throws an error because of the multiple lines etc...
How can I get the yes/no message box to work in this instance?
class Output { string text; { DialogResult dialogResult = MessageBox.Show("Please make sure the following information is correct before submitting." + " Date: " + Date + " Hours worked: " + Hours + " Hourly rate: $" + Rate
I am just a beginner in c++..I am making a program on a physics formula PV=nRT(this is formula of ideal gas equation)i have build the program and it run excellently but i want to improve this i am using a condition p==0 because i want to find 'p' but the problem is every time i run the program i have to input p=0 in the screen but i want the program to skip "p" ( take automatically "p" as 0 when i press enter and got to another varibles)
#include <iostream> #include <cmath> using namespace std; int main()
Program background: Ticket Sales Details You will sell tickets in advance and at the door. Prices for buying in advance and at the door will be given. Also, the total number of tickets sold in advance will be given. Each guest will have a unique number. If there are n tickets sold in advance, then these guests will be numbered 0 through n-1. As the event starts, requests to buy tickets at the door may be made and these guests will be numbered sequentially, starting at the lowest unassigned number. The maximum number of guests will be 1000. The first line of the file contains the following three values, separated by spaces: Cost of the presales tickets (in dollars), Cost of the tickets at the door (in dollars), and the number of presale tickets. The first two values will be positive real numbers to two decimal places and the last will be a positive integer.
The second line of the file will contain one positive integer representing the number of auction items followed by a positive real value to two decimal places (at most) representing the minimum bid increment, in dollars. The first value is guaranteed to be 1000 or less and the second will be in between 1 and 50, inclusive.
The third line of the file will contain all the prices of the auction items, in dollars, separated by spaces, in order. Thus, the first price is the price of item 0, the next price is the price of item 1, and so on. These values will be real numbers represented to up to 2 decimal places.
The fourth line of the file will contain the three following positive integers pertaining to the raffle: the number of raffle tickets available, the cost of a raffle ticket in dollars, and the number of raffle prizes. (It's strange to have raffle tickets that don't cost a whole number of dollars.)
The fifth line of the file will contain each of the values of the raffle items, in dollars, separated by spaces, in order. Thus, the first price is the price if item 0, the next price is the price of item 1, and so on. These values will be real numbers with upto 2 decimal places.
The sixth line of the file will contain ten positive integers representing the number of each of the drinks 0 through 9, in order, that are in stock.
The seventh line of the file will contain ten positive real numbers with upto 2 decimal places representing the price of each of the drinks 0 through 9, in order.
The eighth line of the file will contain a single positive integer, numEvents, representing the number of events that occur at the charity ball. These events are split into two groups: actions by guests at the ball and awards given (raffle, auction, person, totalrevenue). All of the actions precede all of the awards. You will produce exactly one line of output for each event described. Here are the formats of each event that could occur:
If a patron buys a ticket at the door, a command will be on a line by itself:
BUY TICKET k
where k is a positive integer indicating the number of tickets bought at the door. These guests will be numbered as previously mentioned. You are guaranteed that the total number of tickets bought, including presales, will not exceed 1000. This is what I have so far and I cannot figure out why it wont calculate the total revenue. I am not completely sure if it is even accessing the if statement in main.
Code:
#include <stdio.h> #include <stdlib.h> #include <string.h> #define N 1000
I am working on a program that does something like this,
Void main() { cout<<"H";timedelay(1); cout<<"E";timedelay(1); cout<<"L";timedelay(1); cout<<"L";timedelay(1); cout<<"O";timedelay(1); //timedelay(int a) is a function which gives a delay of 'a' seconds. { .... } }
This code is just for fancy and I would like to squish in some statements which would give the user an option to skip it (by entering any keyboard key),and resume with the rest of the program.
What I have to do is write a small program in C++ to parse the symbols that are used on 5 different lines of text in each position until position 30 is reached on each line. The goal of the parsing program is to interpret the symbols (characters), if there are any per each position, on the 5 lines of text in order to output the actual data that the group of symbols represents.
My question for is this: Is there anything special from a C++ environment that should go in to something like this outside of using standard stuff like the math associated with the search algorithm that has to happen here? The symbols are located in a file, so I know I have to include "iostream" and a few other headers. But outside of header inclusions and the code necessary to iterate and streamline the search and interpretation process, am I missing anything special that I couldn't otherwise find through simple google searches?
I am writing a piece of code that requires me to display the last 1000 lines from a multiple text files (log files). FYI, I am running on Linux and using g++.
I have a log file from which - if it contains more than 1000 lines, I need to display the last 1000 lines. However, the log file could get rotated. So, in case where the current log file contains less than 1000 lines, I have to go to older log file and display the remaining. For e.g., if log got rotated and new log file contains 20 lines, I have to display the 980 lines from old log file + 20 from current log files.
What is the best way to do this? Even an outline algorithm will work.
When i click the back button, I like to skip some old pages & rotate pages view in my property sheet.
I have 5 pages, when i clicked the User button in my MainDlg the below function called like, User Button Clicked -> Page1 Opened Next Button Clicked -> Page2 -> Page3 -> Page4 -> Page5 Back Button Clicked Page1 <- Page2 <- Page3 <- Page4 <- Page5
My requirement is, User Button Clicked -> Page1 Opened Next Button Clicked -> Page2 -> Page3 -> Page4-> Page5 -> Page1(Again called 1st page automatically - rotate pages view) Back Button Clicked(Cur Page loc is Page5) (Start the prev Process)Page5 <- Page1 <- (Skip the Page2 & 3)Page4 <- Page5
