C++ :: Read Values From File

May 26, 2013

So i have this .dat file:

############################################
# fonts.dat #
# stores the proportional values for fonts #
############################################

# amount of fonts to expect:
[TOTAL_FONTS]
1

#
# 1st font... GTA HEADER
#

[Code] .....

how can i read values like [FONT_ID] and save them to some variable in code?

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C++ :: How To Read Integer Values From CSV File

Mar 14, 2014

I read one csv file in which it contains different types of data like string, integer etc.I want to fetch only integer data from that file and store in vector.Below i copy some code that read line from file,store in vector.I tried to convert string to integer or double and do some operations on it as i know that string values,but how to identify only integer values and store that in vector?

#include<iostream>
#include<vector>
#include<string>
#include<fstream>
#include<sstream>
#include<iterator>
#include<algorithm>
using namespace std;
int main() {
string line;
int cnt=0,val1,val2;

[Code] ....

input file like
Employee Code:121AEmployee Name :David
DateInTimeOutTimeShiftTotal DurationStatus
01-Apr-139:5919:53FS 9:53 Present

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C/C++ :: Program To Read Values From A File?

Sep 18, 2014

I am trying to get my program to calculate what point goes in what quadrant using a file. But msy program is not reading the values from the file and also it is not running so im not sure what's wrong with it.

//This program uses a fstream object to write data that will read the values of a (x,y) point from a file.
//add the appropriate preprocessor
#include <fstream>
#include <iostream>

[Code].....

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C++ :: Read And Write The Values Of File?

Sep 22, 2012

the output of the password text file contains like this:

username
776655443322 (password encoded)

How to write the value in last line (3rd row) of the file. after that read and write or alter 3rd row value. I need logic using "C" language.

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Visual C++ :: Read And Write Values Into File?

Sep 22, 2012

correct the below code:

file already contains entries : 1st row username; 2nd row password.

check status required to write at third line and need to read or alter the check status value.

Currently this code is working if already there is a value for check status, then it is overwriting else UI hanging.

Code:
WriteCheckStatusToFile(BOOL& locVar) {
FILE *l_pFile = NULL;
CString l_strRememberCheck;
l_strRememberCheck = GetExePath() + _T("password");
CString sVar;
sVar.Format(_T("%d"),locVar);

[code]....

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C :: Read Specific Values From A File And Store Them In Arrays

Apr 14, 2013

What i try to do is to write a code which reads some specific values from a file and stores them in an array. My File looks like this

Code:

XFOIL Version 6.96
Calculated polar for: Myfoil
1 1 Reynolds number fixed Mach number fixed
xtrf = 1.000 (top) 1.000 (bottom)
Mach = 0.000 Re = 0.200 e 6 Ncrit = 4.000
}

[code]...

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C++ :: Read All Values / Strings Form Unknown File

Nov 4, 2014

For an assignment I have to write a program which basically converts 8 bit binary numbers to ASCII and outputs the assembled text. Here's the catch:

The 8-bit binary numbers are provided by some external file (which only contains 8 bit binary numbers); the name and hence length is not known. The external file is called with a pointer upon execution

(./"conversion program" < external_file.in).

I'm getting the 8 bits as a string, calculate/convert decimals, output char type. HOW do I know when to stop the loop? If I just pick an insanely high number I get random stuff at the end; no boundaries obviousely lead to an infinite loop. Can I determine the lenght of this random ext file somehow nonetheless?

Is it possible to create a vector which dynamically adjusts itself until there are no more strings = end of the file?

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Visual C++ :: How Simplicity Read Text File Which Contain One Or Three Values

Oct 21, 2012

Text file can conain one or three integer values in string. How correctly and simplicity read this string?

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C++ :: Program To Read Series Of Comma Delimited Values From A File Into Vector

Aug 12, 2012

I'm trying to get my program to read a series of comma delimited values from a file into a vector. However, I am unsure how to actually go about doing this. I've posted my best guess below but it's really just a stab in the dark and I always receive a compiler error.

Code:

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace std;
vector <string> v_input;
int main() {
ofstream fout ("Insert File Path Here.txt");
fout << "4, 8, 15, 16, 23, 42";

[Code] ....

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C++ :: Read Unknown Number Of Integer Values And Then Print Count Sum And Average Of Odd Values

Apr 9, 2014

write a c++ program that reads an unknown number of integer values and then print count, sum and average of odd values, even values, positive values, negative values!!

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C++ :: How To Read Pixels From X / Y Coordinate Using VGA Register Values

Aug 4, 2013

How to read pixels from an x,y coordinate using the VGA register values?

byte readVRAMdirect(VGA_Type *VGA, uint_32 start, uint_32 offset) //Used in 256 color mode!
{
if (!VGA->VRAM_size) return 0; //No size!
return VGA->VRAM[SAFEMOD((start*4)+offset,VGA->VRAM_size)]; //The full protected offset!

[code]....

getVRAMScanlineStart(VGA,y) gives the offset register multiplied by 2 (shl 1), multiplied with the current memory address size (byte, word or dword) multiplied by the scanline. 256-color mode is already working. GETBIT gives a bit #(0-7) of a specified byte.

writeVRAMplane & readVRAMplane are used by the CPU to write data to VRAM (address 0xA000:xxxx-0xBFFF:xxxx), determined by the memory read and write modes(working) and the odd/even, planar or chain4 enable mode (working).how to get the 16 color and interleaved shift mode working?

ZIP with screen captures: URL....

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C++ :: How To Get Code To Read Multiple Input Values

Feb 10, 2013

So I have to write a code for my C++ class, and I am having a problem trying to figure out how to get my code to read multiple int values. This is what my code should look like

Enter two times in military format (e.g., 1730 1520): 1730 1520
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1520 1730
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1730 1730
[1730==1730]
Enter two times in military format (e.g., 1730 1520): 1760 1520
1760: [INVALID TIME 1]
Enter two times in military format (e.g., 1730 1520): twelve 2
[INVALID NUMERIC INPUT]

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C++ :: Strings - Read Multiple Values In On A Single Line

Jul 28, 2014

My question is on c++ strings. At the moment my program is reading input in one line at a time after the user presses enter.

I want to read multiple values in on a single line. Example: "apple banana orange end" ... How would I do this?

MAIN Code:
#include "Header.h"
#include "Orange.h"
#include <iostream>
#include <string>
#include <cctype>
using namespace std;

[Code] ......

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C :: Read From And Store Values Of Each Line In Multiple Variables

May 6, 2013

So I have this text file that I am trying to read from and store the values of each line in multiple variables. Let's say my text file contains

AXSYZ3482 Tom 100 112 and my code below here works fine when the lines in the text file is separated by spaces.

Code:

while (fscanf(fp, "%s %s %d %d
", userID, name, &startLoc, &endLoc) != EOF) {
printf("%s %s %d %d
", userID, name, startLoc, endLoc);
}

But let's say my file was to look like this instead.

AXSYZ3482:Tom:100:112

But if i try this below...

Code:

while (fscanf(fp, "%s:%s:%d:%d
", userID, name, &startLoc, &endLoc) != EOF) {
printf("%s %s %d %d
", userID, name, startLoc, endLoc);
}

It seem to store the entire line in userID including the ":". I want to ignore the ":"'s and store everything in between in respective varibles in the order specified above.

So first string in userID, then ignore the :, then second string in name, and ignore the next :, and so forth.

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C :: Read Contents Of A File Using Low I/O Read Statements

May 15, 2013

I want to read the contents of a file block (512 bytes) by block using low I/O read statements. Each record is 64 bytes long and has a pre-defined structure. The first 4 bytes are an unsigned integer; the next 20 bytes are ascii text, etc.

I have a buffer which I can access with buf[0] to buf[63] to read the first record and then buf[64] to buf[127] for the second, etc. However, I was wondering how to map a record so that I can refer to an integer as an integer and a float as float, etc. I can't create a struct and move the 64 bytes to it, as I will have alllignment/padding problems.

What is the standard way to deal with records in C?

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C :: Read A Line From Screen / Takes ASCII Values From Entered Text And Edit It

May 10, 2013

This is a small program that reads a line from the screen, takes the ASCII values from the entered text, and edits it. Next, the ASCII values are reinterpreted (am i misspelling?) as text, and displayed. However, my final output has (allways?) at least 7 characters, even if you enter only one. I'm also trying to accomplish, that the part of the string which isn't filled, will be printed empty. In spaces.

compiled with -std=c99.

Code:
#include <stdio.h>
int main(){
int maxsize;
printf("How long is your message?

[Code] .....

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C :: Create File To Write Text And Read Back The File Content

Mar 15, 2013

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].....

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C :: Writing A Simple File / Text Parser To Read A Config File

Feb 6, 2014

I am writing a simple file/text parser to read a config file for some code I am working on. It's dead simple and not particularly smart but it should get the job done. The code reads a config file:

Code:

readlength=2500000
start=0
finish=25000000
cutoff=20000
samplingfreq=250000
poles=10
filterpadding=500
}

[code]....

Here is where it gets wierd. You'll notice that there is an unused variable (filepath) in the config struct. This variable is not referenced or used anywhere in the code, ever. Yet if I comment out the declaration of char filepath[1024], the code segfaults partway through the read_config() function.

My best guess is that there is a buffer overflow elsewhere and it just so happens that the memory allocated for filepath happened to be there to catch it up until now, but I can't work out where it might be happening. With the declaration commented out, the read_config() function gets as far as reading the "padding" variable before it crashes. Yet when the declaration is there, then all the variabled are read correctly and everything seems to work.

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C :: How To Read Data In A File And Print It Then Copy Contents To A File

Mar 8, 2013

Code:

#include <stdio.h>
#include <stdlib.h>
int main (int argc, char *argv[])
{
char buffer[256];
FILE * myfile;
myfile = fopen("read.txt","r");

[Code]...

I also got an error in printing wherein the data in read.txt is "Hello" newline "World" and my program prints world twice.

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C++ :: Read From A Txt File And Then Write A New Text File With Sorted Line

Jun 11, 2014

I have a .txt file which I want to read from and then write a new text file, this time with sorted lines. It is easy to sort one value, but what about sorting entire lines based on one value?

I want to sort the lines based on the FIRST value.

Example text file contents:

values;data
5.01 100
2.9 342
2.69 43534
10.1 43
6.8 45324

Output: Text file containing

2.69 43534
2.9 342
5.01 100
6.8 45324
10.1 43

It's easy to do this if there was only 1 number on each line, but I do I sort all the lines based on the first number in each line?

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C++ :: Read Input File (XML) And Generate Output File

Mar 25, 2013

I have code that reads an input file and generates an output file .For reading the input file we have a xml file.If there is an error while reading or writing the output file the an errored file is generated. But in the errrored file the fields are not coming as in accordance with the reader xml . They are coming randomly . In the module for reading and writing the errored file list is being used . What should be done to write in the errored file as the reader xml fields.

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C++ :: File Handling - Program To Read Inputs In TXT File

Mar 26, 2013

I've written a program to read inputs in a text file. The file named Input.txt contain integers 2 3 and 4. My program is as follows:

#include<iostream>
#include<cstdlib>
#include<fstream>
using namespace std;
int main (){
int x,y,z;

[Code] ....

the program is outputing x=2293616 , y=0 and z=0 instead of x=2, y=3 and z=4.

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C++ :: File Read / Find - Miss 1st Line In File

May 3, 2013

I wrote the below code to find the line with "abc" as my parameter to strTosearch. I expected to the line 1st line but, this function always match the 2nd line. What am I missing here?

I wanted "found" to be "abc def hgi SSS".

Code in main()
String found=GetstringColSamLine("mytext.txt", "abc");

File name - mytext.txt
abc def hgi SSS
abc ppp yyy
string GetstringColSamLine(string routerFileName, string strTosearch)

[Code] ....

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C++ :: Read From Txt File One Bit At A Time And Then Write Into Binary File

Apr 22, 2013

I 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]...

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C++ :: How To Save Struct To File And Then Read It Back From The File

Aug 5, 2013

How to save the struct to file and then read it back from the file ?

Code:
#include <conio.h>
#include <stdio.h>
struct student {
int person;
int egn;
float AvergeGrade;

[Code] ....

Have average grade: %f", person[i].FirstName, person[i].LastName, person[i].egn, person[i].AvergeGrade);
}
//Save to file
getch ();
}

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C++ :: Read Input File (XML) And Generate Output File

Mar 25, 2013

I have code that reads an input file and generates an output file .For reading the input file we have a xml file.If there is an error while reading or writing the output file the an errored file is generated. But in the errrored file the fields are not coming as in accordance with the reader xml .they are coming randomly . In the module for reading and writing the errored file list is being used . What should be done to write in the errored file as the reader xml fields.

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