need to create a program for the following problem
1.Program takes messages as input at a rate “X” msg/sec, and outputs those messages at “Y” mgs/sec in a file.
2.The peak value of X can be 10msg/sec, and Y can be at max 5msg/sec. System should be designed in such a way that it can handle the peak input rate of 10msg/sec for not beyond 5 minutes.
3.Message contains following fields – unit id, timestamp, temperature.
4.Input data to be read from a file. Output data to be written to a file.
5.For testing design 3 types of profiles –
a.Profile 1 for 10 min – low rate, i.e. X = 4 msg/sec on an average throughout the period.
b.Profile 2 for 10 min – Max rate, i.e. X = 10 msg/sec for 2 min; then a sleep of 2 min, then repeat the same pattern till complete period
c.Profile 3 for 10 min - Max rate, i.e. X = 10 msg/sec for 5 min; then no traffic for next 5 min
-Create three files namely all_numbers, odd_number and even_number. -Get the number of records and the numbers to store from the user. -Save all the numbers in "all_numbers" file. -Read each number and check whether it is odd or even. -Store the odd numbers in odd_number file and even numbers in even_number file. -Finally, print the numbers stored in odd_number and even_number files.
I am new to c++ programming i just want to know how to write the data into different files.Suppose my input files has 1-8 ids so each id data must be stored into each different file. And below is my code.
I am trying to make a simple program, I would like it to be able to do the following, Write a program that opens two text files (input1.txt and input2.txt) for input .The program should write the followings in the two files. input1.txt:
This is the first line in input1.txt. This is the second line in input1.txt. This is the third line in input1.txt. This is the fourth line in input1.txt.
input2.txt:
This is the first line in input2.txt. This is the second line in input2.txt. This is the third line in input2.txt.
What would be the best way to go about doing this? I wrote the program below, but I don't think that it works.
#include <iostream> #include <fstream> #include <string> int main() { using namespace std; string input1;
The program should be print the numbers 0 through 10, along with their values doubled and tripled. The data file contains the necessary variable declarations and output statements.
Example the output:
Single Double Triple 1 2 3 2 4 6 3 6 9 4 8 12
here my code tell me if correct
#include <iostream> #include <cstdlib> using namespace std; int main () { int x, double, triple;
I need to write a program that merges the numbers in two files and writes the results to a third file. The program reads input from two different files and writes the output to a third file. Each input file contains a list of integers in ascending order. After the program is executed, the output file contains the numbers from the two input files in one longer list, also in ascending order. Your program should define a function with three arguments: one for each of the two input file streams and one for the output file stream. The input files should be named numbers1.txt and numbers2.txt, and the output file should be named output.txt.
In my program I open two files and write data into each, and close them. this is done in a while loop.
int main() { while() { myFile = fopen("file1.txt","w"); myFile2 = fopen("file2.txt","w"); // write data into files using fprintf() in a for loop fclose(myFile); fclose(myFile2); } }
However, after some iterations the fopen() for myFile2 fails.
Debug assertion failed! Program.... File ......srcfprintf.c Line 55
Expression (str != NULL)
I have not been ableto locate the bug in the code that is causing the failure.
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 working on a personal project with a screen that looks like this:
+++++ +++++ ++O++ +++++ +++++
And below that it asks where you want to move. I've done the majority of the work, I just have to figure out how to actually move the O. Here's my source code:
#include <iostream> #include <iomanip> #include <algorithm> using namespace std;
Write a count controlled loop than can print "i" char. The user is supposed to input a integer and that integer is how many asterisks there is on the blade, in this case it is 5.
* * ** ** **--------------- ******* ** ** ** * ** * -10 Rows high ** -blade always connects on second row of handle ** ** ** **------------------
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" );
[Code] .....
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???
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;
I'm trying read a binary file. A binary files is continued with bytes(ascci characters). and the 1st position is the position 0(zero).
I'm trying read just some values from ICO file:
- the 3rd value is in 4th-1 position(number of icons); (See the table: [URL] .... ) - the with is the (numberoficons*16) + 4 (the 16 is the Entries structure size) position; - the height is the (numberoficons*16) + 4 + 4 (the 16 is the Entries structure size) position.
now see the code:
int iconwidth; int iconheight; int iconcount; FILE *iconfile = fopen(filename.c_str(), "rb");//open the file fseek(iconfile,4-1,SEEK_SET); //put the file in position 6(the position starts from 0) fread(&iconcount,sizeof(char),2,iconfile);//get 2 blocks with char size(2 bytes).. i'm getting the number of icons
I am using dir object from dirent.h to read files of a folder. The code I am using in order to read all data is the following:
vector<string> directories;
DIR *pDIR; const char * c = path.c_str(); struct dirent *entry;
[Code]....
I am wandering when I am trying to read two times the files of the same folder, it will be stored with the same order or every time I ll read in folder it ll return different file order?
