C++ :: Read Float Value From File?
Jan 12, 2014how to read float value from file like getw function used to read integer data.
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C++ :: Read Float Numbers From Keyboard And Store Them Into Array Of 10 Elements
Jan 10, 2013I have to complete a project that i want to read float numbers from keyboard and store them into an array of 10 elements.! Every time that a number stored into array i want to compare with previous one if they have +-10 difference .. I want to keep only 10 elements into my array so every time that i give value a[0] replace a[1], a[1] replace a[2],a[2] replace a[3]. . . .and a[10] deleted.. So when all elements of the array are similar with +-10 values print out the array.!
View 1 Replies View RelatedC++ :: Writing Float Value To File
Oct 11, 2014I'm trying to write the value of xcord to the file, but it's come out as jiberish like š™ for some reason.
#include <iostream>
#include <Windows.h>
using namespace std;
[code]....
C++ :: Turning A Limited Float Into Another Float?
Nov 20, 2013I can do the folowing:
float var1 ;
var1 = 9.12345 ;
printf("%.2f",var1) ;
the output will be 9.12. What if I wanted to save that as another separate float with displaying it on screen?
C/C++ :: Cannot Convert Float To Float Assignment
Jun 8, 2014#include <iostream>
#include <string.h>
#include <sstream>
[Code]....
C :: Scanning A File With Words And Int / Float Numbers
Dec 1, 2013scanning a file with both words and INT's/Float numbers. This is the file data here.
15 25 200
3 10
17.99 22.99 109.99
100 2 4
5.99 99.99 20.00 49.99
10 10 10 10 10 10 10 10 10 10
3.99 5.99 7.99 8.00 5.00 5.00 5.00 6.00 7.00 9.99
[Code]...
What I'm focused on is reading in the first three numbers which I already have with fscanf and then reading in BUY TICKET with the digit afterwards. My problem is that I don't know how to reach that part of the file without scanning in something I don't want to. Also, how would I scan the number after scanning BUY TICKET? Would it be something like using %s and %d right afterwards?
C/C++ :: Input Float And Integer And Save It To Txt File
Mar 20, 2014i am writing a program that requires me to write am input a float and an integer and save it to a txt file. When i try to compile my code i get an error "assignment from incompatible data type". ?
int *intconstant;
float *floatconstant;
int *value;
struct FILE *infileptr, *outfileptr;
infileptr = fopen("/home/brinkmann.brendon/assign14data.txt", "r");
outfileptr = fopen("/home/brinkmann.brendon/assign14report.txt", "w");
[Code]...
C++ :: Debug Error When Taking A String And Casting It To Float With File Stream
May 9, 2014Debug Error
ProjectsFinal ProjectGrItemDebugGrItem.exe
R6010 - abort() has been called
I was going over this with a friend and it seems as though getline() is not reading anything in and thus throwing the abort error. I'm not sure why this is because I've included the textfile, with the correct name of course, in both the regular file location and the debug folder. I ask for user input and the user then inputs the name of the file they want, I do some required things behind the scenes and display the results for them in a cmd window. I've included pastebin files for both my header and cpp files because it is far to large for one post I shall, however, post the full code in the comments.
Quick Code
The problem occurs on line 159. I'm assuming once this line is fixed, line 163 will have the same problem.
// Read regular price
getline(nameFile, input, '$');
vectorList[count].regPrice = stof(input.c_str());// Casts string to a float
// Read sale price
getline(nameFile, input, '#');
vectorList[count].salePrice = stof(input.c_str());
Pastebin Links : [URL] ....
C/C++ :: Write A Program That Reads Four Float Numbers From The Input Text File
Apr 3, 2015I need to write a program that reads four float numbers from the input.txt file, then it prints out the greatest of the four numbers into the output.txt file. I did everything, but the numbers don't print out.
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ifstream inFile;
ofstream outFile;
float number1, number2, number3, number4;
[Code]...
C :: Read Contents Of A File Using Low I/O Read Statements
May 15, 2013I 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?
C :: Create File To Write Text And Read Back The File Content
Mar 15, 2013The 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].....
C :: Writing A Simple File / Text Parser To Read A Config File
Feb 6, 2014I 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.
C :: How To Read Data In A File And Print It Then Copy Contents To A File
Mar 8, 2013Code:
#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.
C++ :: Read From A Txt File And Then Write A New Text File With Sorted Line
Jun 11, 2014I 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?
C++ :: Read Input File (XML) And Generate Output File
Mar 25, 2013I 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.
View 1 Replies View RelatedC++ :: File Handling - Program To Read Inputs In TXT File
Mar 26, 2013I'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.
C++ :: File Read / Find - Miss 1st Line In File
May 3, 2013I 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] ....
C++ :: Read From Txt File One Bit At A Time And Then Write Into Binary File
Apr 22, 2013I 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]...
C++ :: How To Save Struct To File And Then Read It Back From The File
Aug 5, 2013How 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 ();
}
C++ :: Read Input File (XML) And Generate Output File
Mar 25, 2013I 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.
View 1 Replies View RelatedC/C++ :: Read From File And Print Output To File?
Apr 20, 2014I know this is how you read from a file. I also want to print my output to the same name of the file plus ".txt". So if my file is called "text" I want to print it to a file called "text.txt".
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
[Code]....
Would it be something like this? Is it better to use "a" or "w" in the fopen? I want to write to it several times.
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
[Code].....
C/C++ :: How To Make 2 Arrays Put Them In A File Then Read Them From File
Mar 11, 2014I have to read 2 arrays, put them in a file. Then make a 2nd program, read the data from the file and show the 2 arrays. I believe I have fully completed the first program, but I am still working on the 2nd one. On the 2nd one I am trying to create a function that displays the data from the file.
//first part
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
const int num_stores = 3;
const int col = 4;
const int size=4;
void showData( const string[], const int[][col], int size );
[code]....
C++ :: How To Read Dat File
Jan 21, 2014I'm working on a program that reads from a .dat file that has names and numbers associated with the name. What the big picture it will be able to take those names and numbers find the avg of certain peoples scores and display these numbers or names who have the highest etc.
So to keep this short in my main I have it call the class and pass "Even.dat" as a char * fname my questions is how do I go about reading this .dat file? I know sorting it will use a sort algorithm which I will be using a bubble sort. But I haven't worked with ofstream and ifstream very much so some tips would be great! Here's an example of what the .dat file contains
David 42
Rebecca 83
Jonathan 79
Matthew 77
Rose 7
Melanie 75
int main() {
StudentStat StatEven("Even.dat");
[code]....
C# :: Read A Particular Value From CSV File
Dec 9, 2014I am a learner in C#. I want to read a particular value from the CSV file. I have learned the getting the csv file into a datatable through browsing. See the following code and my CSV file format. The following code displays all the values.... Say, I want to get what is the 'Volume' for 'ID' = 90.
CSV file (IDVolumeName.csv)
ID:Volume:Name
100:5600:A
95:5000:B
90:4500:C
85:4000:D
Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Data;
[Code] ....
C/C++ :: Can't Read File From Txt
Apr 22, 2013I have a code for reading a series of data from a text file.The code was shown below I don't know why I can't successfully read file. (Can open successfully)
btw: the text file and source code were located at the same directory.
#include <stdio.h>
#include <stdlib.h>
int main(){
int numOfAtoms;
[Code]....
C++ :: How To Read Binary Img File
Nov 24, 2014When reading a binary .img why is it when you read it by slurping in the file, then save it to a string and cout, you don't see the binary but random garbage?
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