Write a program that reads the telephone.dat file and displays its contents on the console. The program should allow the user to add new entries to the file.
I have saved the file into a resource file within visual studio and I am trying to run the code to where the file will be shown when I run the program. I know that the program is running and the file is there because if i misspell the filename it will give me the error message. I don't know how to make the contents of the file display.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
string input;
fstream dataFile;
In the assignment we are forbidden to use fscanf(). I have been trying to get this to work, but I've started to realize that I do not have a complete understanding of what strtok() actually does. I'm getting this warning when debugging: "assignment makes integer from pointer without cast."
This warning happens when assigning str to goal and assist, and I think it is because they are, when dereferenced, integers. The code below correctly assigns the name into the correct spot, but leaves nonsense data in the goal and assist arrays.
ex:-7880, -7888 file example: NAME GOALS ASSISTS JOHN 1 2
Code: void readLinesFromFile( FILE* Ptr, int* goal, int* assist, char** name, int lines ){/* * Reads lines from files and populates the arrays with the corresponding info. */ int index; char hold[ MAX_LINE ] = { 0 }; char* str = NULL;
[Code] .....
From what I understand about strtok(), it returns a string, and takes in a character array and a key value that tells it when to stop. In the online examples I've seen, they use NULL in the first field. I'm not sure why.
I am using TinyXML 2 for the data of my RPG game, I am almost done with the tilemap parsing system, but I just couldn't figure out how to extract csv data that I have in my XML file, like this:
I am working on a quadcoppter and am having trouble trying to parse the output that I am getting from the sensor. This is the code that I am trying to get to work but the Arduino compiler is saying that i can't convert and int to a string unfortunatley I am trying to get the string to convert to an int.
Code:
//string that will be processed is this //Ax=-209 Ay=5 Az=1116 | Gx=7 Gy=0 Gz=7 | -31 233 -433 Headings 100.20 void setup() {
I am doing a project processing emails in EML format. I searched for a library doing eml file parsing and got no hits. I really dont want to code the parser myself. I just want to get the project done with minimize cost. Which library should I use?
Suppose i have a text file with ":" as delimiter, how to i find the average value of each column? For e.g. First column will be (3+2+5)/3 and second column will be (61+87)/2 for the third column.
Sample text file ================ 3:290:61:100: 2:50: 5:346:87:
I have tried using getline in while loop, but it seemed more complicated because i think it requires much more than that.
I have this project for school where I basically need to write a program that will take any text file and convert it into html code.
string line; int lineCount = 0; while (!inFile.eof()) { getline(inFile, line); cout << line << endl; lineCount++; } cout << lineCount - 1 << " lines of text read in this file." << endl;
I have this block of code to print each line of the text file into the terminal window and count the number of lines printed. But I don't know how to make it change a single character or set of characters to something else. For example, if a line of text begins with the number "1", I want to be able to change it to "<h1>".
I'm trying to make a program where it reads a text file which contains "blocks" of questions like:
Type: multiple_choice Question Num_options: number of options a) option1 b) option2 c) option3 d) option4 Letter of answer
and
Type: short_answer Question Answer text
what I'm trying to do is use parse those blocks and have it get handled by the classes, MultipleChoice and ShortAnswer.
I'm planning on using getline as a virtual function and have an if statement like "if (string == "multiple choice) ** then get it handled by the MultipleChoice class "
my data are #saben~123~tvm~999999~local~# #ach~123~tvm~999999~body~# #sam~123~tvm~999999~wash~# #sus~123~tvm~999999~area~# #sach~123~tvm~999999~local~#
I have a text file which contains many sentences. I am trying to extract only the numerical values from the string that conatins characters,numbers and white spaces from the file. I want to seperate the characters and numbers into different parts.
for example: the file contains sentances as given below.
I have to go to school for 10min. You will come here in 15min. He stayed here for 20min.
from the above sentances, I want to seperate " I have to go to school for " and "10" and put them into two different variables and also 10 should be in integer format.
I am working on a program where I am reading in a text file to be parsed to load data objects into their appropriate classes. I have a class to load in this file and to parse its contents. I am at the point where I would like to include the ability to have both C and C++ style comments in this text file. My current class has a constructor that takes in const std::string for its file name. Upon construction I have a while loop that calls a member function getNextLine() as long as this is true this loader class object then calls parseGui(). All of this works correctly so far. Within the function getNextLine() looks like this:
// ---------------------------------------------------------------------------- // getNextLine() // Returns True If It Got A Line Of Text (Could Be Blank If It Is All Commented Out Or // If It Truly Was A Blank Line). False Is Returned When There Is No More Data In The File bool GuiLoader::getNextLine() { if ( !_file.readLine( _strLine ) ) { return false;
[Code] ....
As you can see this getNextLine() method reads in a single line of text and saves it into its member variable which is a std::string. It increments the line number, then a utility function trims out leading and ending white spaces. The next part is where this class calls a member function to remove comments. It is in here where I need to parse the string to look for comments either "//" C++ style line comments or "/* ... */" C style block comments that can span multiple lines. I have tried many different ways to go about doing this, and I am stuck on the C style comments. A note to consider is this: the way this code is designed is reading in a line of text from the file into a string variable and in doing so it is not logical for me to read in the complete file and do a pre-parse scan or analyzer.
This is what I have so far, however there are still cases that this code will fail on
An example of where this code will fail is when it encounters a single '/' any where on a line of text as it goes into an infinite loop. I am not sure on how to go about skipping this lonely '/' and advanced the index to look for a possible next '/' that belongs to a '//' or a '/*'. I know that this is sort of trivial, but for some reason or another I am having writers block.
If your strings are all well-formed it is possible with the following regular expression:
String[] res = str.split(",(?=([^"]|"[^"]*")*$)");
The expression ensures that a split occurs only at commas which are followed by an even (or zero) number of quotes ... and thus not inside such quotes).
Nevertheless, it may be easier to use a simple non-regex parser.
But the .split gives me an error and .Split doesn't work either.
im trying to read employee information from a file using structures but im having problems with getting the file to open and read in the information
Code:
Write a programt that inputs (at most 50) records from a sequential file #include <stdio.h> #include <stdlib.h> struct employee // employee structure definition }
Ben 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.
I 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.
#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.
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.
I have a 3-dimensional matrix(3,3,3) and want to write it to a file. I have the code for parsing it in a compatible for matlab format. But at this point i want to use a pointer to do the same thing.
Code:
#include <stdio.h> #include <stdlib.h> int main() { const int dimx = 3, dimy = 3; int i, j; unsigned char a[3][3][3] = {
[Code]...
If it is a 1-dimensional array i can understand the logic.
Code:
int val[7] = { 11, 22, 33, 44, 55, 66, 77 } ; int *p; p = val[0]; for ( int i = 0 ; i <= 6 ; i++ )
