C/C++ :: Copy Content Of File Into Structure Array
Feb 8, 2014
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]);
struct Wine { string wineName; int vintage; int rating; double price; };
how can i store the file data below in an array with the structure type???
Dow Vintage Port ;2011;99;82 Mollydooker Shiraz Carnival of Love ;2012;95;75 Prats & Symington Douro Chryseia ;2011;97;55 Quinta do Vale Meão Douro ;2011;97;76 Leeuwin Chardonnay River Art Series ;2011;96;89
I tried to make the program read from a file text the first name or last name but o cant seem to get it. i tried alot of different ways. how can i get the array of structure code to read form a file?
#include <iostream> #include <fstream> #include <string> #include <cstdlib> using namespace std; const int NUM_STUDENTS = 17; const int NUM_QUIZZES = 10; const int NUM_EXAMS = 5;
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(){
I would like to write a complete structure array to a file and read it back, recovering all the data. I have tried the following:
Code:
#include <stdio.h> #include <string.h> #define NUM 256 const char *fname="binary.bin"; typedef struct foo_s { int intA; int intB; char string[20];
[Code]...
//---------------------------------------------------- but the mac field is reading back some random value repeatedly. Why is that? And how do I fix this?
When 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];
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:
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.
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.
I 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
//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
I have written this code, and at first glance it does what I want, however I am worried that
a) I am overwriting the array that is apssed from chord.getPattern() b) Im getting a memory leak that I want to get rid of, and c) is there generally a /what is the neater way to do it:
Code: uint8_t* ChordBuilder::invert(uint8_t count, Chord chord) { temp = chord.getPattern(); chord.invert(true); //TODO count is how many times to invert. Moves root aswell however
for (uint8_t i = 0; i < count; i++){
[Code] ....
temp is a member variable of ChordBuilder - and is expressed as: Code: uint8_t* temp; I dont want the pattern that chord stores, and passes with getPattern() to change - I fear it is at the moment?
I would rather not use the "new" but I cant think how to get rid of it, however Im not sure where I would need to put the "delete"?
#include<iostream> #include<string> using namespace std; int main(){ char char_array[10]; int ascii_array[10];
[Code] ....
I have been trying for a while to copy a string to an array, i know i can copy an char_array element to a string but its with a two dimension. How can i do this? i want it to be user entered.
