reading and writing 2D arrays I've been trying out a few tutorials using FileStream but I couldn't get any of them to work.
Anyway what I'm trying to do is save the playerArray to a .txt file and then read from that .txt into the fields within the GUI. This is supposed to act as a database.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
// declare child arrays public string[,] childcolor; public string[,] childgeneo; // create dictionaries public Dictionary<string, int> colors = new Dictionary<string, int>(); public string color; // name for dictionary public Dictionary<string, string> geneo = new Dictionary<string, string>();
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I'm getting "field' is used like a 'type' error on jw.childcolor which causes other parts to error out.
How do I fix this & why am I getting the error?
I want to convert the dictionaries to arrays to read & write sequentially.
And a few more (up to 3000). These defines are used to read certain fields from a DICOM image, that give information about that image (Patient Name, etc…). However I don’t wish to read all these fields. Instead I’m trying to load an .ini configuration which will configure which fields to read. For example:
[PROPERTIES] # Fields to read fields=PatienId,Modality
This would only retrieve the Patient Name and a Modality.
The problem is, the values I retrieve from the .ini file (reading and parsing the file with std::fstream) come as a string. How could I retrieve, for example, the defined value from PatientId, i.e. “(0x0010, 0x0020)”? Something like std::cout << # << "PatientId"; won't work.
My tasks was to write a program which finds difference between two arrays (elements which are in first array but not in second and vice-versa). Program works, but something wrong is with the memory allocation for array.
My code is: main.c Code: #include <stdio.h> #include <stdlib.h> #include "header.h"
Using PIONTER NOTATION ONLY, write a function that receives two arrays of integers like A and B above. The function should swap the values in A and B. You may NOT use array notation [ ]. Also, you have to use pointers to move among array cells. Note: Both arrays are of the same size, and size should be variable in the function.
SO Im supposed to write a program that uses arrays to calculate the sum and display it. I keep getting the error that says the sum has to be initialized.
#include <iostream> using namespace std; //Function prototype int sumArray(int); const int NUM_ELEMENTS = 5;
Place the even lucky numbers in an array called evenList, the odd lucky numbers in an array called oddList, and the negative lucky numbers in an array called negList.
//So in main main i passed the array as parameter and the size;
void lucknumberlist(int favnum[], int size) { int even = 0, odd = 0, neg = 0; int evenArray[even]; int oddArray[odd]; int negArray[neg]; if(favnum[even] % 2 == 0) { evenArray[even] = favnum[even];
My program needs to receive data continuously from one process and the received data is read continuously by another process.But when I am trying to create a pipe using mknod on fat32 file system in linux , it throws an error saying "mknod: operation not permitted".
I receive a telegram in XML format and I need to parse it and send my data in the same format back. My main problem is that I'm not allowed to use any open source software or other 3rd party software except VS2010. I have to write it in C++.
Now my question: is there any good tutorial for such a parser? I was hoping that I could write something which can be used similar to the GEtPrivateProfil-functions which are handy for ini-files.
i'm trying to write a calculator. the user will enter the terms and they will be stored in arrays. i will be storing those terms in string arrays and then later turn them to double to work with them. but the user should be able to enter terms like sin(252) and the program should be able to recognize it and calculate it.
this is my read/write functions based the read from the last post! then went nuts with it! used the %19s%*s on the write to the file, solved all the probs on the read side! but any refining on this would be great. This is another program that i started with the forums, and started going my own direction!
1. Design 1: Have an independent class to handle everything and "friend" it with the users. Pro: Only 1 interface needed and we can switch interface easily. Con: There is a lot of inter-class data which destroys encapsulation
class CalibratorXML; class Device{ string sourceLabel; string destLabel; vector<CalPoint> calPoints; friend class CalibratorXML;
I'm looking to write a program in C/C++ to traverse a Fasta file formatted like:
>ID and header information SEQUENCE1 >ID and header information SEQUENCE2
and so on
in order to find all unique sequences (check if subset of any other sequence) and write unique sequences (and all headers) to an output file.
My approach was:
Prep: Copy all sequences to an array/list at the beginning (more efficient way to do this?)
Grab header, append it to output file, compare sequence for that header to everything in the list/array. If unique, write it under the header, if not, go on.
However, I'm a little unsure as to how to approach reading the lines in properly. I need to read the top line for the header, and then "return?" to the next line to read the sequence. Sometimes the sequence spans more then two lines, so would I use > (from the example above) as a delimiter? If I use C++, I imagine I'd use iostreams to do the reading.
How to read some characters from file, I know we can move a pointer to some position using seekg() & seekp() function, get current position of the pointer through tellg() & tellp() functions. By moving the pointer to appropriate position using seekg(), we can read the whole line using getline() function. But is there any function which read certain characters from the current position of the pointer and write certain characters from current position of the pointer.
How to read some characters from file, I know we can move a pointer to some position using seekg() & seekp() function, get current position of the pointer through tellg() & tellp() functions. By moving the pointer to appropriate position using seekg(), we can read the whole line using getline() function. But is there any function which read certain characters from the current position of the pointer and write certain characters from current position of the pointer.
int main () { FILE * pFile; long lSize; char * buffer; size_t result; pFile = fopen ( "myfile.bin" , "rb" );
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How to open binary for read and write? Why the buffer is char * buffer? i mean in binary u cant read chars . How can it be? how the data is represented? just like txt file? What the buffer will contain how to print this buffer???
Explain me a working code to read and write a file using serial communication.and i need to store that file.I know normal file handling in C, but how it is through serial port i am not getting.
I'm not sure if I should do this with malloc or a char array. What I need to do is create 4 methods to read and 4 to write to memory like this (and it has to be fast):
Code:
char GetByte(char* memory, int offset); uint16 GetInt16(char* memory, int offset); uint32 GetInt32(char* memory, int offset); char[] GetString(char* memory, int offset);
So basically memory is the malloced memory and the offset is the position I want to read at.
I'm not sure if there's already a way to do this and maybe I'm overlooking something.
So I've been turning my programs into classes and I run into errors.
So this program is supposed to allow the user to open the file and either read or write to it.
I've omitted the read part from it as I want to attempt that on my own .
I get these compile errors:
fileclass.cpp:13: error: ISO C++ forbids declaration of ‘choice’ with no type fileclass.cpp:21: error: ISO C++ forbids declaration of ‘choice’ with no type fileclass.cpp: In member function ‘int file::choice()’:
So I'm trying to create a program that allows one to read/write on to output.txt. I though I had everything set up right, but its only writing one word to the text file. Heres the code.
#include "stdafx.h" #include <iostream> //Needed for User Input #include <fstream> //needed for ofstream #include <string> // needed for strings #include <windows.h> //needed for Sleep #include <cstdlib> //Needed for return EXIT_SUCCESS;
using namespace std; int main() { ofstream outputfile; //allows to read and write to files
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If I type Puppies Are Cute and go to output.txt, the only thing written in the text file is Puppies.