Am I doing this correctly? My assignment is pretty much to answer certain codes manually.
int i = 0;
while (i < 7 )
{
cout << 2 * i;
++i;
}
Does this code read as
2 * 0 = 0
2 * 1 = 2
2 * 3 = 6
2 * 4 = 8
2 * 5 = 10
2 * 6 = 12
How about the ++i part?
I would like to write a program that can analyze png files to assess whether they have any rotational symmetry.
I am aware that opencv can be used to do certain image recognition tasks, would it be appropriate for what i'm trying to do?
This program must work in linux.
I have to analyze and elaborate datas from particle energy measurements. I have a file txt like this
1 126 17 20 23 32 39 55 68 81 98 111 129 141 151 164 170 182 180 183 187 187 181 186 178 174 175 172 163 159 155 147 140 138 128 122 105 100 99 87 80 66 59 55 48 42 40 33 31 25 25 22 19 19 18 15 15 16 15 16 15 13 13 14 14 14 14 13 13 14 14 13 15 15 14 15 14 14 13 12 13 14 13 14 14 14 13 14 14 13 12 13 13 13 13 14 13 13 13 13 14 14 14 13 13 14 14 14 12 12 13 12 13 11 12 13 12 13 14 12 12 12 11 13 12 13 13 15
2 124 20 34 9 34 51 50 61 76 71 69 95 99 108 103 101 95 89 117 98 107 76 86 66 97 97 80 17 54 45 44 39 40 18 13 29 20 16 15 15 16 14 15 16 16 15 15 14 13 12 14 14 14 12 14 13 12 15 12 12 14 14 11 12 12 14 12 12 13 12 12 13 12 12 12 13 12 13 13 13 12 14 12 12 13 10 12 13 12 13 13 13 12 12 12 13 12 12 13 12 10 15 13 13 12 14 12 12 14 12 12 13 13 13 12 12 12 11 11 13 14 12 12 12 13
The first two numbers are the Particle ID and its Energy, the rest of numbers are the loss of energy(different in number for every particle).
I have to elaborate 1000 events like this and to create a function able to read every line and to count the number of the loss energy measurement.
I use ifstream to read a file text, but my problem is: my program how to understand that it's passing to the new line? I have to divided every events in Arrays of different length, so i have to count each data for every particle and then create the array.
The instruction EOF it's not good...
I'm trying to analyze Population Dynamics. I found some articles and read them but what kind of model i need to use. I tried Forest Fire model but i failed in modificating.
#include <stdio.h>
#include <stdlib.h>
#define MaxPopulation 10000
#define MaxChildren 10
#define maxAge 70
#define ranf() ((double) random()/(double)RAND_MAX)
I would like to create program which will analyse bitmap so would need good concept to save data. I am interested about the theory and I realize that i must to think this carefully because bad concept could create insufficient memory or inefficient program. Basically I want my program work with HSV or HSL model so I would need to convert the bitmap to HSL, but I am not sure if I should convert it first and then analyse all pixels or should I start to analyse the bitmap and make the conversion to HSL during it. But my main question is what method to choose to save the data in memory.
Even that I would start with very small, it should work also with bigger image like image having 1200 or even 4200 px on height. So the program should first analyse all columns of pixels in the image so for example 1200x800 px image has 1200 columns. So I would like to know if is it possible to create such object which would have such structure like this
Obj->basicColumnData->black->columns[name]->group
and in the place of columns should be placed data for every column. I would look for groups of pixels in the column, so in the result the column x could bear e.g. 500 groups of information and every group should contain the range of pixels e.g. group 1 should contain y value from 0 to 20, group 2 should contain value from 25-27 and so on. So I would create 1200 columns bear many of groups. This would be contained in "black" or "white" member to contain the data. This is just simplified idea, but the whole object should contain next data not just basicColumnData... So there should be another members bearing information calculated from the selected data.
So my question is what kind of method of saving data use for this? Should I use heap and dynamic allocated memory or should I create custom class, which will define every member, but these members will have to be dynamic memory? With the dynamic memory is there problem that there could be not enough memory to create such big object?
So the premise of my code is to read in a 2d array from a .txt. The array is a game board but the first two lines are what determine the size of the board. After i read it in i want it to find wherever te character "U" is, and then display the array but only showing U and whats around it. Problem is i cant get the array to print the right size and the code for displaying the U is not working either.
ifstream inputFile;
int boardSizeRow;
int boardSizeCol;
inputFile.open("C:UsersMichaelDesktopfileboard2.txt");
inputFile >> boardSizeRow;
inputFile >> boardSizeCol;
inputFile.get();
[Code]...
FILE:
20
20
WWWWWWWWWWWWWWWWWWWW
W GO W W
W WW w S W
W H W GW w W
WPW WW G W
WK W W
W W W W w w W
WK WU W
SW w w W
W W
w W G W
G W w W
D wwwww W
K w D W
w w W w w W
ww w WWWWWWW
G w W
ww w S w W
WWW G W
WWWWWWWWWWWWWWWWWWWW
I am trying to use struct to store variables from a text file and use them in the main program. I have first tried running the program without using struct and declaring the variables within the main program and it runs fine. But after using struct, it gives no compilation error and a segmentation fault as output. Also, if the size of file/variable size is unknown can I declare variables as char string[]??
The code is as below:
Code:
#include<stdio.h>
struct test {
char string1[10000];
[Code].....
So I have to write a code for my C++ class, and I am having a problem trying to figure out how to get my code to read multiple int values. This is what my code should look like
Enter two times in military format (e.g., 1730 1520): 1730 1520
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1520 1730
[1520<1730]
Enter two times in military format (e.g., 1730 1520): 1730 1730
[1730==1730]
Enter two times in military format (e.g., 1730 1520): 1760 1520
1760: [INVALID TIME 1]
Enter two times in military format (e.g., 1730 1520): twelve 2
[INVALID NUMERIC INPUT]
how can i burn and read data from cd rom in c# language.???
View 5 Replies View RelatedI've got some code in C++ that does some basic analysis on price data and I run it from the cmd prompt. One of the functions I had built to read in the data is as follows:
void ReadPricesFromFile(constchar*filename,std::vector<PriceInfo>&prices)
{std::ifstreaminput(filename);
input>>prices;}
How would one merge this type of code into a Qt GUI? Ideally, I'd like to use something like QFileDialog to open up a folder with my data files, select a file, and then read the file that the user selects. Would the main.cpp look something like this?
int main (int argc, char *argv []) {
QApplication prog (argc, argv);
QPushButton *load_button = new QPushbutton ("Load File");
QObject:: connect (load_button, SIGNAL (clicked()), &prog, SLOT ( (ReadPricesfromFile function?);
load_button-> show ();
return prog.exec ();}
I am trying to read data from more than one file at once. The files are different types e.g. one is a text file one is an xml file like so, StudentInformation.txt, CollegeInformation.xml. The files are all stored in one place, in this case on the D drive of a local computer. I am trying to locate any files in the D drive with a file extension of .txt or of .xml (there may be more than two of these files in the future, so I'm trying to allow for that). Then I want to open all of these files, extract the information and output all the information in one display window. I want all the information from these two or more files to be displayed together in the display window.
Here is the code so far. It is throwing up errors.
//Load from txt files
private void btnLoad_Click(object sender, RoutedEventArgs e)
{
IEnumerable<string> fileContents = Directory.EnumerateFiles("D:\", "*.*", SearchOption.TopDirectoryOnly)
.Select(x => new FileInfo(x))
.Where(x => x.Extension == ".xml" || x.Extension == ".txt")
.Select(file => ParseFile(file));}
[Code] ....
The error it throws up is:
Error 1 'BookList.Mainwindow.ParseFile(System.IO.FileInfo)': not all code paths return a value
I tried to make the program read from a file text the first name or last name but o cant seem to get it. i tried alot of different ways. how can i get the array of structure code to read form a file?
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
const int NUM_STUDENTS = 17;
const int NUM_QUIZZES = 10;
const int NUM_EXAMS = 5;
[Code] .....
I have to write a c++ program to read html code and do bunch of stuff. One thing that i have to do is to count the no of attributes and sort them in descenting out and print out only first 10 frequently used attributes. I counted them using maps and sorted them using multimaps but now dnt knw how to print only 10 elements
for(std::map<string, int>::iterator it = Element.begin(); it != Element.end(); ++it)
Elements.insert(pair<int, string>(it->second, it->first));
for(std::multimap<int, string>::reverse_iterator it = Elements.rbegin(); it != Elements.rend(); ++it) {
cout << "Element: " << it->second << " : " << it->first << endl;
}
This is how i did it . How to display only 10 elements and not all the elements.
I have assignment which requires me to print out and array code and a pseudo code. I dont no what a pseudo code is,.
View 2 Replies View RelatedI have a class 'A' which is almost perfect for my needs. Class 'B' uses class 'A' I've now designed Class 'C' and Class 'D' and noticed that there is a good chunk of code in class 'B', 'C' and 'D' for using Class 'A' is duplicated. I've separated out this code in specific, standalone functions in each of the classes. Now I'm wondering where this code should go. At the moment, the functions are duplicated in the three calling classes (B, C and D). Placing the functions into class 'A' would break the single responsibility principle. Inheritance to add functionality would likely break both SRP and LSP. The one that seems that it may work is composition.
However, Is designing a complete class just for a few functions over kill?
Would it be valid for classes 'B', 'C' and 'D' to access both the new class 'E' (which would depend on A) and the old class 'A' (which would have to be the same instance as the instance in the new class 'E'), or should the new class 'E' provide sufficient functionality so that Classes B, C and D don't need to access Class A directly? It would seem that its then an incomplete interface of the original object with additional functionality (ie, incompatible) Or should I do it a completely different way?
Is possible read text form keyboard using read() function? or which is best way in ansi creplace input command form basic language. for numbers and text...
View 3 Replies View RelatedI 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?
i wrote the following code :
Code:
#include<stdio.h>#include<conio.h>
#include<stdlib.h>
int a[][4] = {15,9,10,25,6,2,4,7,32,19,42,8,21,17,18,0};
void boxes();
void display();
void main()
{int ch,r=3,c=3,t;
[Code]...
not able to esc when i press esc key.how to get rid of this.
I wanna to know how can i get a string from the user and treat it as a c++ code ..is there any way to do that ??
View 7 Replies View RelatedI want to make a RTS game but how can I code an AI for RTS games. How to do that?
View 5 Replies View RelatedI am making a game and want to make an updater that grabs the source code from a page on the web. Can this use things that are available to all platforms? It could just be something that grabs the text from the page and executing it (maybe using something like Python's exec() command ?) BTW I'm using mac
View 1 Replies View Relatedthis is my code i want to put the part where i have it do multiplication and addition into functions. and then call them so that it can run the addition and multiplication. Heres my code
# include <iostream>
using namespace std;
int main(){
[Code].....
I'm pretty new to C++ and I'm on Binary Trees in "Jumping into C++"! I've just created a DLL project on Code::Blocks, and I cannot get it to build and run: "You must select a host application to "run" a library..." is the message that I'm getting when I run the main code file. It's had no changes to it (except for a few extra, unnecessary line feeds), and it's the file which Code::Blocks generates on a DLL project.
View 13 Replies View Relatedwhats wrong with this code, I'm trying to parse a .js file and replace all the ";" with "; " i.e add a new line after each ";". So I load the file into a char[] buffer then assign a string to this contents of this buffer. Then loop char by char through using an iterator and check for a ";", if found use replace. So int i gets to about 85898 then crashes with unknown error, 'i' should reach about 175653. It does work up till it crashes. And, is this not a simpler way to load a file into a buffer, there is in C.
Code:
#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>
#include <stdlib.h>
int main()
[code]....
I have a function that needs to return a "uint8_t" value. However before doing the processing I need to perform a test on the argument to check if it's between expected boundaries. Although this function works it gives (a logical) warning that not always a value is returned although expected. What is the normal way for functions like these where I normally should return e.g. -1 in case the test doesn't succeed and otherwise the uint8_t (t) value?
Code:
uint8_t myFunc(int a) {
if (a >= 0 && a <= 100) {
// Perform actions
uint8_t = ...
return t;
}
}
I have a code that I'd like to debugg it.
Question
1 - What is the correct command line to use the debugger ?
2 - Do I need to install additional software for the debugger ?
if yes what it's name?
I use ububtu 12.4compiling command: gcc abc.c -lpthread -o abc