I am using c to read and write contents of a file into other:
FILE *ptr;
status_t status;
uint32_t block_size, result;
uint32_t num_blocks;
char temp_buffer[1024];
}
[code]....
Is there way to see the binary content of this file.
The Objective Of This Program Is To Create A File To Write Text And Read Back The File Content. To Do That I Have Made Two Function writeFile() To Write And readFile() To Read.The readFile() function works just fine but writeFile() doesn't.
How writeFile() function Works? when writeFile() function Execute It Takes Characters User Type And When Hit Enter(ASC|| 10) It Ask "More?(Y/N)" That Means What User Want? Want To Go Next Line Or End Input?
If "Y" Than Inputs Are Taken From Next Line Else Input Ends.
But The Problem Is When Program Encounters ch==10 It Shows "More?(Y/N)" And Takes Input In cmd variable.If cmd=='Y' I Mean More From Next Line Than It Should Execute Scanf Again To Take ch I Mean User Input.But Its Not!!! Its Always Showing "More?(Y/N)" Again And Again Like A Loop.
Code:
#include <stdio.h>
void writeFile(void);
void readFile(void);
int main(){
[Code].....
Can i edit records stored in file without rewriting whole file again .?
View 1 Replies View RelatedWhen we are using RAM DISK - the files are stored on the RAM. From what I understand (and saw many examples) in order to read data from file (the file which locate on the RAM) - I need to use the read function.
Is there a chance to get char* (or any pointer) to the content of the file without using the read function ?
If the file locate on the RAM, it seem that it is like I have a buffer on the RAM (like an array which was dynamic allocated) and in the case of a buffer on the ram -> we can use pointers to the data without reading all the data.
example:
class CDATA {
int nValue1;
int nValue2;
double dValue3;
double dValue4;
char achBuf[10];
[Code] .....
A user enters a query and other users reply to it. But it creates a problem here. After adding queries, if I wish to reply to query in between then it adds a redundant entry in file. 1st entry is the original query without reply and 2nd entry is the same query now with a reply added. I want only 1 entry of the query along with replies.Here is the code:
Code:
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include "var.c"
int check_count();
void add_query();
void add_reply();
}
[code]....
I'm trying to read all content from a text file into a string. This is the code I'm using for it (I know there are other, maybe better ways to do it but I'd like to stick to this for now):
char* buffer;
std::string data;
FILE* fp = fopen("textfile.txt", "rb");
if (!fp) {
printf("Can't open file");
[Code] ....
So my problem is that I get an exception when I try to free the memory -> 0xC0000005: Access violation reading location 0x51366199
I even get the exception when I try to free it immediately after calloc() but why this is.
And if I use buffer = (char*)malloc(lSize); I don't get any exceptions.
So, why this fails and what I'm doing wrong.
I would like to store the entire content of a file in a single c-string variable or in a standard string class variable. Is there a function that will do this for me? I am familiar with functions that get one character or one line at a time but I don't think I've encountered a function that gets the entire file. Does this function keep or disregard the end-of-line character? If no such function exists, I would write my own function to create and return such a variable.
View 4 Replies View RelatedI need to develop a simple program, i have 2 variables (begin, end), and i need to search in a file, And extract the string between the Begin and the End variables to a new File, For Example:
my text file: file.txt:
some text here<StartHere>more text here</EndHere>text text
C++ Program:
//Declear 2 variables
strcpy_s(begin, string("<StartHere>").c_str());
strcpy_s(end, string("</EndHere>").c_str());
//And now, search in the Text file, And Extract the text between the begin string and the End string.
<...>
The Result should be: NewFile.txt with the content:
<StartHere>more text here</EndHere>
That's it!, Here is what i have for now:
#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
int main() {
int ocurrences_count = 0;
int ocurrences2_count = 0;
char word[20]; //this array will save user input
[Code] ....
I am trying to write a program for a library system that allow stuff to add, remove, view and delete customer. i try to use file to store data and i open the file in mode read then i store then i put the content of the file into a structure. now the problem started it is only showing me haft of the content and here is the coding.
#include <stdio.h>
# include <windows.h>
# include <stdlib.h>
#include<string.h>
#include<conio.h>
void search(int s,struct books eli[20]);
void view(int x,struct books eli[20]);
[Code] .....
Following is the program I wrote it basically takes 9 inputs and then save them into binary file. then print out the data stored in binary data and find inverse of it then print the inverse out. but its stuck in a loop somewhere.
Code:
#include <stdio.h>
int main() {
int a[3][3],i,j;
float determinant=0;
int x;
FILE *fp = fopen ("file.bin", "wb");
[Code] .....
I need a large string vector for file content manipulation.
v1.max_size() gives me 153 391 689.
But if I make a test by looping a vector pushing back strings it crashes around 16 - 26 000 000 though I still have a lot of ram (1GB left).
How come and why isn't vector size limited by ram instead?
Code software that, from an original text file, generate another file with the text content in upper case.For exemple:
entrence:
luke
tom
alex
outings:
LUKE
TOM
ALEX
My code so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
}
[code]....
I am trying to get text file and read only first 100 lines of the text content using c/c++. how can i do it?
is it something like string line;
getline(stream,line);
??
I am reading my file (20GB) line by line using boost like this
PHP Code:
boost::interprocess::file_mapping* fm = new boost::interprocess::file_mapping("E:Mountain.7z", boost::interprocess::read_only);
boost::interprocess::mapped_region* mr = new boost::interprocess::mapped_region(*fm, boost::interprocess::read_only);
char* bytes = static_cast<char*>(mr->get_address());
An exception is thrown in the second line while allocating memory for mr.
I use boost because it can also work in Mac which my code will be ported to.
I need to create a program which could create text files of the bits stored in avi file/binary file. My first requirement is to show 0s and 1s in the text representation . My second requirement is to create an avi file from this text file. I have tried few codings but either they give me error or they not playing the reconverted binary files.
View 6 Replies View RelatedI am trying to get the code to read from the txt file one bite at a time and then write this bite into the binary file but i cant seem to get it working.
FILE *fpcust, *fpcustbin; //<<<<<-----point to both sales and customers text files, and the new .bin files for both
char buffer;
int ch;
int ch1;
fpcust = fopen("c:customers.txt", "r"); //<<<<-----pointing to the file
fpcustbin = fopen("c:customers.bin", "wb"); //<<<<<-----pointing to the new binary file, opening in writing binary
[Code]...
In a C++ map, is there any way to search for the key given a content? Example:
I have this map:
map<int,string> myMap;
myMap[0] = "foo";
Is there any way that I can find the corresponding int, given the value "foo"?
cout << myMap.some_function("foo") <<endl;
Output: 0
I just wrote a program for Huffman Encoding, where I take a text file, encode it in the form of 0's and 1's, and save that as another text file. However, this does not solve my purpose as it is taking even more space.
So I want to know how do I convert a text file containing these 0'S & 1's to a binary format.
Here is my program:
#include <stdio.h>
#include <string.h>
#include<fstream>
#include<string>
#include<iostream>
using namespace std;
typedef struct node_t {
struct node_t *left, *right;
int freq;
char c;
[Code]...
I wrote a code and I found a small problem with the display of the pointer
here is the code :
Code:
#include <stdio.h>#include <stdlib.h>
#include <string.h>
int main(int argc, char *argv[]) {
[Code]....
I need to display all the content of the ( codedParams & modeParam ) in the next piece of code
struct SAOOffset {
SAOMode modeIdc; // SAOMode is an enumerator
Int typeIdc;
Int typeAuxInfo;
Int offset[MAX_NUM_SAO_CLASSES];
SAOOffset();
~SAOOffset();
Void reset();
const SAOOffset& operator= (const SAOOffset& src);
[Code] .....
I'm trying to create an appointment time table.
I used a ListBox with each ListBoxItem representing 15 minutes. Now I want to add some kind of label/picture next to the Listbox to indicate the hours.
What I did was I got rid of the scrollbars and scrolling ability of the ListBox and I heightened to the max. THen I added it into a Scrollviewer to scroll up and down.
Now I also have a StackPanel with TextBlocks. Each TextBlock is an hour label.
I want to put that StackPanel into the Scrollviewer as well so it can scroll alongside the ListBox! But it seems the Scrollviewer can only have one "Content" in it.
A picture of my program:
Link to Dropbox pic
Here is my XAML so far:
(In this code my StackPanel is actually currently in Scrollview. I want to add my ListBox in as well...but I can't... />/>
<Grid>
<ScrollViewer Height="444" Width="350" Margin="834,145,10,182">
<StackPanel Height="1440" Width="101" HorizontalAlignment="Left" VerticalAlignment="Top">
[Code].....
In this example code:
Code:
printf ("
Type in 1st address: ");
scanf ("%x", &address1);
address1 = (address1 - number1) * 2;
printf ("
Result = %08X
", address1);
How can i copy the contents of var address1 onto the clipboard?
how can i write a contact manager system(CMS) in c ?
View 2 Replies View RelatedI'm makeing a card game with ncurses. I have all the card and player objects in order but i'm stuck trying to get the gui to work.
I'm using multiple windows for different players deck and pile. Now to the problem: I can get all the windows to show with borders in the console but i can't get any content printed in the windows and I rally can't see why!?
I have been reading the guide on [URL] but I don't get any further on the problem right now.
PS. the complete code incl. Makefile can be found at:
github.com/DanBrehmer/cardGame
#ifndef GUI_H
#define GUI_H
#include <ncurses.h>
[Code]....
I'm trying to write a program that prompts the user to enter a math expression (i.e 2*x + x*x) and a value of x. Then generate the value of y. My real question is: Is there a way to put the content of a string into the source code?
Example:
string math_function;
double x, y;
cout << "Enter the function: ";
getline(cin, math_function);
[Code] .....
I have this class, Prenumeratorius, it represents a subsriber in this context. Then I have a class Leidinys, which represents a newspaper:
class Leidinys {
private:
string kodas;
string pavadinimas;
double vienetoKaina;
[Code] .....
So in while loop it just reads data, Then I create Prenumeratorius object and store data in it, then I want to add it to correct place by using DėtiPrenumeratorių(), I will show it's content in just a moment. And the last method call - I just add element to another two way list of all subscribers.
So here is content of DėtiPrenumeratorių():
void LeidiniuSarasas::D/>ėtiPrenumeratorių(string kodas, Prenumeratorius &P) {
for(LeidiniuMazgas *dd = p; dd != NULL; dd = dd->Pirmyn()) {
if(dd->Imti().ImtiKodą() == kodas) {
dd->Imti().DėtiPrenumeratorių(P);
}
}
}
It just loops through all newspaprers and searches for the match. I actually tested this method, it works just fine, the problem is one step further:
As you can see, it calls another DėtiPrenumeratorių() method, this time that method puts Prenumeratorius in the vector I showed at the beginning.
The problem is, that when that method is over, vector's content dissapears, I debuged program and saw that, but I can't recognize what is wrong, I added & to all of my method's headers where it accepts that Prenumeratorius object. The same algorithm used to work with one way list.