C :: How To Get Data From A File
Aug 16, 2014I'd like to get only the third column of this file into a c-programm and to calculate the mean value of that numbers.
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C :: File Operations - Fwrite Padding Extra Data In File Compare To Data Provided As Input
Oct 28, 2014I am trying to write my files to another subfolder . Below is my program.
Code:
cat th6.c
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#define SIZE 8
#define NUMELM 8
[Code] ....
I observe my filename along with directory as text in the new file created in sublfolder. This is output.
[cporgs/apue/threads]: mkdir first
[cporgs/apue/threads]: ./a.out test.txt first
test.txt -- first/test.txt
dfdfdfdfdfdfdf-14
dfdfdfdfdfdfdf-14
in thread test.txt first
[cporgs/apue/threads]: cat first/test.txt
dfdfdfdfdfdfdffirst/test.txt
[cporgs/apue/threads]: cat test.txt
dfdfdfdfdfdfdf
I could not able to get from where this filename and folder is getting added.
C++ :: Input Data From File / Write Data To File
Mar 8, 2013Ben has been administering a MBTI personality test. Now he has all the responses, but the task of scoring and compiling results seems daunting. The personality test* is a series of 70 questions for which the available responses are ‘A’ and ‘B’. Based upon the answers to the 70 questions, a personality profile is determined, categorizing the degree to which the responses place the person on four scales:
Extrovert vs. Introvert (E/I)
Sensation vs. iNtuition (S/N)
Thinking vs. Feeling (T/F)
Judging vs. Perceiving (J/P).
Each of the 70 questions relates to one of the four scales, with an ‘A’ response indicating the first of the corresponding pair (E, S, T, or J) and a ‘B’ indicating the second (I, N, F, or P). For instance, an ‘A’ response on the question: At a party do you:
A. Interact with many, including strangers
B. Interact with a few, known to you indicates an Extrovert rather than an Introvert; just the opposite for a ‘B’.
For this test, each question is designed to influence one of the four scales as follows:
questions 1, 8, 15, 22, 29 … are used to determine E/I,
questions 2, 9, 16, 23, 30 … and 3, 10, 17, 24, 31 … to determine S/N,
questions 4, 11, 18, 25, 32 … and 5, 12, 19, 26, 33 … to determine T/F, and
questions 6, 13, 20, 27, 34 … and 7, 14, 21, 28, 35 … to determine J/P.
Notice these come in sequences of “every 7th” question.
The goal of the test is to determine which end of each of the four scales a person leans, and to thus classify him/her based on those leanings (e.g., as ENFJ, INTJ, etc.). Since Ben would also like an indication of how strongly the test taker fell into each of the four, the program should print the percentage of ‘A’ responses for that scale.
Input for this program should come from a file responses.txt. The first line of the file will contain a single integer, n, indicating the number of test results to follow. Each of the following n lines will contain the first name of the test taker, a single blank, his/her last name, a single blank, then the 70 responses he/she gave on the test. Although the test instructions indicate that the results are most valid when all questions are answered, sometimes respondents leave questions blank. In that case, a dash appears at the corresponding place in the list of responses.
Output for the program should be written to the file types.txt. It should include a well-formatted report listing, for each test taker, his/her name, the percentage of ‘A’ responses in each scale, and the resulting personality type. A tie within a scale should result in a dash (‘-‘) for that part of the personality type.
C++ :: Stream Data To A File And Then Return To File To Add Further Data?
Aug 23, 2012I am trying to stream data to a file, and then return to the file to add further data. When I add data the second time, I then want to update the value of the second byte in the whole file. I can't seem to do this!
Here is my sample code:
Code:
int a = 1;
int b = 2;
int c = 3;
int d = 4;
int e = 5;
int f = 6;
int g = 7;
int x;
fstream out1("file.dat", ios::out | ios::binary | ios::trunc);
[code]....
The output I get is "1, 2, 3, 4, 5, 6", but I want to be getting "1, 7, 3, 4, 5, 6", because in "out2", I seekp to the second integar entry, and change it to "7".
I have also tried using ios::ate in the constructor for "out2", but this gives me the out put "4, 7, 6, 6, 6, 6", which is suggesting that when I create my fstream object "in", any seekg commands are relative to the beginning of the "out2" stream, rather than the "out1" stream.
C :: Store Data In Binary File Then Use It To Find Inverse Of Matrix Form Of Data
Dec 6, 2013I need to find inverse of a matrix data in binary file should be used to form matrix.its not finding inverse correctly rest is working good.
Code:
#include <stdio.h>
void createbin();
void display();
void inverse();
int main()
{
createbin();
display();
inverse();
[Code] ....
C++ :: Data Input Into A Text File While Not Deleting Original Data
Apr 19, 2013I want to input data into text file while not deleting the original data in the file and I use something as
ofstream writefile;
writefile.open("example1.txt");
if (writefile.is_open()) {
for(j=0; j<N; j++) {
[Code] ....
But this will delete the original data.
C/C++ :: Display Data From File Into 2D Array - Print Closest Bmi From Data
Mar 28, 2015#include <iostream>
#include <fstream>
using namespace std;
int main() {
int r = 0;
int c = 0;
int num[17][15] = { 0 };
[Code] ...
// Here is my code for displaying the data from the text file into a 2d array and height next to it, but I am not able to diaplay the height from 60 to 76 next to the row of the 2d array, as shown in the table below. This is my program:
Recently the health authorities have listed a new way to calculate the body mass index (BMI) of an individual.
Values of 20 – 24 are classified as normal, 25-29 as overweight, and 30-34 as heavy.
The table below is a portion of a typical BMI table.
BMI:202122232425262728293031323334
Height:
60102108113118123128133138143149154159164169174
61106111116122127132138143148153159164169175180
.
.
.
MY task is to write a program that does the following things:
1.Produce the table by reading in the data from bmi.txt (on Moodle) into a 2-D array.
2. Display the table neatly on the screen, with row and column headings. The BMI should go from 20 to 34. The height should go from 60 to 76 inches.
3. Prompt the use for their height (in inches) and their weight.
4. Make the program print the closest BMI.
If their weight is lower than the values on the table, use 20 as the BMI.
If their weight is higher than the values on the table, use 34 as the BMI.
5.Loop the program so the user can find more BMI’s.
Visual C++ :: Finding Value In Data File Closest To Calculated Data?
Jan 11, 2014I'm reading from a file the middle column of data (Volts) where my test file "AP.txt" is opened by my program. Here is a segment of the data:
time Volts dV
49552 -66.20183 -0.01556807
49553 -67.76025 -0.01556495
49554 -69.30704 -0.01533247
49555 -70.81799 -0.0148486
49556 -72.26774 -0.0141133
49557 -73.63226 -0.01315276
49558 -74.89141 -0.01201764
Since the calculation I performed gives me -71.77 Volts, I need to match this value to the time that this occurs closest to using my program, and output the time that this occurs at.
Here is my program so far:
int main()
{
std::ifstream inFile;
inFile.open("AP.txt");
ofstream results_file ("maxvaluewithinput.txt");
float TimeAtdVMax = 0;
float VoltsAtdVmax = 0;
[Code]...
If you're curious, this program isn't for homework. It's part of the independent learning on C++ I'm doing for a Master's Thesis; the program will eventually model the APD90 of a ventricular action potential.
C++ :: Getting Data From Excel - CSV File Or Data Library?
Jan 30, 2013I am very very new to C++. A bit of background. I have been writing in excel vba for large number crunching, and the code is now taking quite a while to run. A friend of mine suggested i start writing in C++, so i read up on it. And downloaded Code:Blocks.
My VBA Code is:
Sub arrayss()
Dim NameArray As Variant
Dim datarray As Byte
Dim DirectionArray As Variant
Dim WinArr As Variant
[Code] .....
Ultimately i would like to recode this to C++, but my first and probably silly question is how do i get the data from Excel to use in C++. I was thinking either to put the data in 3 csv files and convert into three Arrays in C++. Or maybe create a library of the data in C++. Ultimately it is speed i am looking for, so before i start recoding i wanted to start with the best way.
The data is like this in excel: (don't know how to create a table)
ABC DCA GFE THE
15 0 1 0 1
30 1 0 1 0
45 1 1 0
00 0 0 1
15 1 1 0
15 1 0 0 1
15 0 1 1 1
30 1 0 0
45 1 1 1
So the headers would be in one array, the 15's, 30's etc would be in another array and the 1's and 0's and Empty ( i need it to record an empty cell) would be in another array...
C++ :: Multiple Of CSV File Used As Input / Extracting Data To A Output File - Getline Function
Jun 4, 2013I have written a C++ program I have multiple of CSV file used as input, which I open one at a time and close it after extracting data to a output file which is the only file.
I run getline(inFile,line);
outFile << line << endl;
I run this code, and only part of it is goes to the output file I got, also have spacing randomly to specific file and inconsistent
But when I slower the code, like system("Pause") in the loop, I can get extract what I want perfectly....
Is my program running to fast, why getline would be skipping part of what things I want?
C++ :: Data File Handling Error - Character Strings Not Copied On Text File
Nov 24, 2013I have this code for a computer project... (store management) but the character strings are not copied on text file..
#include<iostream.h>
#include<conio.h>
#include<fstream.h>
class Store {
public:
char *item_name[5];
store()
[Code] .....
Now when i run the program, it gives a error :::
ERROR
address 0x0
How can i write these strings to the text file?
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/C++ :: Getting Data From File - Count Number Of Words In A Text File
Mar 27, 2014I have a program I have to do that counts the number of words in a text file. I have tried the code on 2 computers now since my programming teacher told me the code was fine. Here is my code:
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
int main() {
ifstream infile;
infile.open("tj.text" , ios::in);
[Code] .....
C++ :: Reading File Then Printing Data Onto Other File
Nov 7, 2014I am reading a file then printing the data onto the other file. It is working, however when I check to see if each variable is being properly set after reading the file a issue arises.
Example of the file being read
Code:
Vehicle PV50CAN passed camera 1 at 05:33:26.
Vehicle W867BRO passed camera 1 at 05:33:29.
Vehicle KQ63ARU passed camera 1 at 05:33:38.
Vehicle K954ITQ passed camera 1 at 05:33:40.
Vehicle V220MXB passed camera 1 at 05:33:42.
[Code] .....
C++ :: How To Use Data From A Data File
Nov 8, 2014I need to perform operations on data from .data file i am able to load the file but how to use the data and perform operations on it. The file had roughly around 200 entries.
View 4 Replies View RelatedC :: Binary File Write By User Input Then Printing Binary File Data Out
Dec 6, 2013Following 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] .....
C :: How To Get Some Data In A File
Aug 16, 2014How to use fgets(). I cant understand the bookish definition. I want to get some data in a file.
View 7 Replies View RelatedC :: How To Extract Data From Txt File
Jan 13, 2015I managed to read txt files and printing them on the console window. I was given a task to select and sample a certain amount of data.
Example of txt file:
Voltage (V),Current (I),Power (W)
50,2,100,
51,2,102,
52,2,104,
etc.. How can I display only the column of Voltage and Power?
C :: Opening A Data File Or Not
Jul 18, 2013I have attempted a couple of different times to open a .txt file in a program, however it always goes to the "file was not opened."
Code:
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *inFile;
[Code]....
C :: Transferring Data From One File To Another
Feb 11, 2013I have some problem with the ssize_t sendfile function.
ssize_t sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
The error:
Lesson_4_1A_Home_work.c:84:24: error: expected declaration specifiers or ‘...’ before string constant
Lesson_4_1A_Home_work.c:84:37: error: expected declaration specifiers or ‘...’ before string constant
Lesson_4_1A_Home_work.c:84:63: error: expected declaration specifiers or ‘...’ before ‘strlen’
Code:
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/sendfile.h>
#include <sys/types.h>
[Code]....
C :: How To Display Data From A File
Feb 24, 2013I'm trying to display data from a text file named ace_data.txt. Here's a preview of the first three lines i want to display:
2001 106 15
2002 65 12
2003 175 16
So basically, here is what my code looks like...
Code:
#define FILENAME "ace_data.txt"
int main (void) {
FILE *inp,
*outp;
[Code] ....
And nothing is displayed when i run the program. I feel like I made some mistake with the fopen() and fscanf() functions but I'm not so sure how to correct them.
C :: Manipulating Data In A File
Sep 28, 2014How can I manipulate a data in a file for example the saved file is like this:
code name Price Quantity
001 hammer 100 4
002 screwdriver 100 4
what i like to do is:
1. the user will be ask to enter its code
2. will output the searched code and then
3. the user will be ask to enter how many pcs he/she will buy.the formula should be
pcs=pcs-users_input if the user selected the code 001 and enters only 1pc it should be updated to only 3 pcs left in the file.
C :: How Data Actually Store In File
May 19, 2014How data actually store in the File. Like do data store just in one line or at different places for example in array data store in adjacent memory block while in struct data store at different memory block.?
View 2 Replies View RelatedC++ :: How To Create Data File
Jul 26, 2013How do i create a data file?
View 2 Replies View RelatedC++ :: Data From TXT File Into Array
May 14, 2013#include <iostream>
#include <fstream>
#include <string>
#include <cmath>
#include <stdio.h>
#include <ctype.h>
[Code] .....
LA .20 45
ME .15 90
MD .15 90
MA .20 90
Fairly simply BAC calculator, and I am trying to get data from a text tile, which you can see a sample of just below the code. I am attempting to store the information in an array which can be displayed with the final calculation. It compiles fine, but when I get to the part where I enter the state, I get nothing back.
C++ :: How To Save Data To File
Sep 28, 2013what are the codes that will save the data then it will appear in a file (.txt).
I typed the name "SpongeBob SquarePants"
SpongeBob SquarePants
