C++ :: Simulate Random Walk In 2 Dimensions
Jan 6, 2015
I am writing a piece of code that simulates a random walk in 2 dimensions (an object chooses whether to move up, down, left or right randomly). I would like the program to run the simulation for many objects at the same time. The way i have written it means that for every object i add the code becomes about 40 lines longer. Any method that would simplify the code so that i could have many objects but not pages and pages of code.
#include <ctime>
#include <cstdlib>
#include<iostream>
#include<cmath>
#include<iomanip>
#include<fstream>
using namespace std;
double dist(int a, int b);
[Code] .....
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Mar 19, 2014
I am supposed to create a program that simulates a random walk that starts with position 0. If its odd it moves to the right (add one) if the random number is even it moves to the left (subtract 1).
#include<iostream>
#include<iomanip>
using namespace std;
void main() {
int num1, num2, num3, num4, i, rs = 12345 ;
cout << " Please enter the number iterations to be executed: ";
[Code] ....
I'm getting an error when I try to run the program: error C2106: '=' : left operand must be l-value. So I don't even know if what I have is right.
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Oct 25, 2013
I am trying to make a random number generator to simulate a critical hit if the number generated is from 0-critical amount. However, every time i run the code, despite being within the parameters set by the if statements, it always runs through as a critical hit and never a regular hit.
#include <iostream>
#include <iomanip>
#include <ctime>
#include <cstdlib>
using namespace std;
int main(){
srand((unsigned)time(0));
[Code]...
There are four attempts to save time in getting a good result.
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Dec 16, 2013
Write a function that takes a picture and two integer values and stretching the image by dimensions.
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Jul 3, 2013
Code:
#ifndef CIRCLE_H
#define CIRCLE_H
class Circle {
public:
//constructors
Circle();
Circle(double r);
[code]....
The function isBigger() returns true (or false) if the radius of the Circle instance on which the function is invoked is bigger (or smaller) than the radius of the Circle instance passed to the function.: How to implement this function?
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Oct 29, 2013
If I have a one-dimensional array of length 10, vector<int> x, and I want to assign all the elements to value 5, then I can do the following:
Code:
vector<int> x(10);
x.assign(10, 5);
(I can also do this in x's constructor, but in my scenario I want to repeatedly assign x's elements in a loop, without having to construct a new vector in memory each time.)
If I now have a two-dimensional vector, vector<vector<int> > y, and I want to assign the first vector to length 20, the second vector to length 10, and each element in the second vector to value 5, then I can do the following:
Code:
vector<vector<int> > y(20, vector<int> (10));
for (int i = 0; i < 20; i++) {
y[i].assign(10, 5);
}
But is it possible to do this without the loop? Can I make the two-dimensional assignment in just one line, in the same way that the one-dimensional assignment was made?
Perhaps it would like something like the following, which is not correct but illustrates what I mean:
Code:
y.assign(20, assign(10, 5));
Another way of doing this would be the following:
Code:
y.assign(20, vector<int> (10, 5));
But wouldn't this cause the memory in the second array to be dynamically allocated each time? I don't want to do this - I want to keep the same memory, but just assign the elements to 5.
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Feb 18, 2013
I have a JPEG in memory as a char* and a bytesize, if I save it to disk with a .jpg extension it's a perfect JPEG file. The thing is, I don't want to save it unless it's a minimum width/height. I got it into memory using a socket recv() call. What should I do ?
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Nov 14, 2013
This is my code and it's not giving me the right output
Code:
#include <stdio.h>
int main() {
int dim;
int i, row, col;
// inputting matrices dimensions
int M0, M1, M2;
[Code] ....
The output should give me this:
Input 2
Correct Output 2 5 4 10
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Nov 8, 2013
So the latest challenge from jumping into c++ is as following.
Code:
Write a function that builds the multiplication table of arbitrary dimensions This chapter also talks a ton about 2d arrays.
So I've built my program thus far as this.
Code:
#include <iostream>
using namespace std;
int drawTable(int,int);
int main()
[Code] .....
So basically, the idea is that I can use the arrays dimensions as a placeholder, and just multiple them to get that specific spot, so table[0][0] = 0, [0][1] = 0 and so on. However the output actually seems to be randomly generated numbers so I'd like to ask, what am I doing wrong? Am I on the right track? Or have I missed the bus stop completely.
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Oct 2, 2013
What I'm trying to accomplish is to ask the user what their floor plan is (in square feet), have them pick what kind of material they want and give them a general price.
Which is working out great so far, but I would also like to add a loop at the end that cycles back if they want to re-do the estimate with a different material selection and if not exit out the program.
I've been trying do while and if/else loops but i can't get them to work right.
#include <iostream>
#include <string>
using namespace std;
int main() {
string custName, selection;
int custNumber, floorSize, material, contactSystem;
[Code] ....
That's basically what I've come up with so far minus all the erroneous attempts. Though as is I technically complete the assignment, I would like the extra credit from making the last part loop.
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Aug 12, 2014
have udp server-client application written in C. On the client side packet loss is detected using recvfrom function and sequence numbers of packets. How can I now simulate dropped packet's on the client side, for example if server is sending 1000 packet I want to drop 20% of them? I want to do this in the code, not for example using ip tables or WANEM or something like that. And one more thing, I have few clients and I want that they can dropped different packets, not the same one.
Code:
while(1){
nbytes = recvfrom(socket, buffer, MAX_SIZE, 0, (struct sockaddr *) &srv_addr, &addrlen);
if (nbytes != -1) {
// packet is received
}else{
//packet is not received
}
}
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Nov 14, 2013
Write a program that simulates coin tossing. For each toss of the coin, the program should print Heads or Tails. Let the program toss the coin 100 times and count the number of times each side of the coin appears. Print the results. The program should call a separate function flip that takes no arguments and returns 0 for tails and 1 for heads. [Note: If the program realistically simulates the coin tossing, then each side of the coin should appear approximately half the time.]
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Mar 29, 2014
I want to write a c++ code that due the structure of file space allocation,Simulates file system with 2*n array. Each column represents a sector. The first row is for storing files And second row holds the address of the next sector (Number of columns). And With each click on keyboard Create a file with random size and automatically find Appropriate sectors by using disk allocation method (or index allocation)... Also File names should be asked from user... And we should have file table Where the starting address of each sector,file extension and file size is given..
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Oct 1, 2013
So this code compiles without any problem but it is not producing the correct output. I know there's a problem in either my getBlock or putBlock functions but I can't see it.
Currently the output is "Should be 32 1s: "
"Should be 32 2s: "
There should be 32 1s and 32 2s and nothing is coming out.
#include <iostream>
#include <fstream>
using namespace std;
class Sdisk {
public :
Sdisk(string diskname);
[Code] .....
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Apr 9, 2014
How to get live streaming of stock data from yahoo finance? Using C++. I need the code and fetch the data so I can do calculations on the price and volume or what not.
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Oct 11, 2013
I am trying to simulate memory in C. I want to create a structure in C that will hold a 8bit opcode and a 32bit memory address. This would simulate a 40 bit instruction for my simulator.
I read in an old book that packed structs could be used for this to not waste space. What are the draw backs for using this? I am not worried about wasting space, but just looking for a simple way to access the memory instructions. Below is a sample of the structure that I want to use.
struct memory_area {
unsigned int opcode:8;
unsigned int address:32;
};
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Sep 16, 2014
I'm in need of the C program which will simulate the process of placing and removing CD's in CD container using QUEUE.
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Sep 23, 2014
I saw a program in which it uses rand like this:-
d1=rand() % 6+ 1;
where, d1 is any integer. The program is to simulate the roll of a dice. The whole program is this:-
Code:
#include<stdio.h>
#include<stdlib.h>
main() {
int i;
int d1, d2;
int a[13];
[Code] .....
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Mar 28, 2013
Write a program that simulates an adding machine. When a zero is entered it should print the subtotal of all the numbers entered from the last zero that was entered and reset the subtotal. When two consecutive zeroes are entered it should print the total (not the subtotal) of all the numbers entered and terminate the program. Example:
1
2
3
0
subtotal 6
4
5
-2
0
subtotal 7
8
0
subtotal 8
0
total 21
Be careful this program needs a bit more thought than you might think at first. To get full credit you must make sure it also works for the 0 - 0 case. Example:
0
subtotal 0
0
total 0
The problem is, after I enter the integers and type 0, it shows the subtotal which is what I want; however, when I type more integers and type another 0 to see the subtotal again, it shows the total instead. The subtotal should reset whenever a single 0 is typed and the total should only show when two 0's are inputted simultaneously. Also, after the user enters two 0's simultaneously and views their total, I want the program to exit by saying "press any key to exit." Is there a special name for that to happen? Here is my code:
#include "stdafx.h"
#include <iostream>
using namespace std;
int main() {
int subtotal = 0, total = 0, number = 0;
bool input_zero = false;
[Code] ....
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Mar 10, 2015
I am trying to make a text editor in C++ that uses Linked Lists as the main driving force. I need to make a program that can add a line of text at a certain point, delete a certain line of text, print the entire text, and quit and save the text to the original text file inputted from the shell script. My problems are with the cpp file, and the linked list files. My remove function is not what I need it to be I know that. I also know that there are some problems with my cpp file myEditor. My code is below.
#include <sstream>
#include "linkylist.h"
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
int main(int argc, char *argv[]) {
//node* head = new node;
[Code] ....
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Aug 22, 2013
How to simulate(automatic) mouse right click operation using c#?
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Oct 17, 2013
Create a line class using a linked list that acts as a queue (first in, first out) both enqueue and dequeue. Complete the line class so that customers can be added or removed from the line. Implement the line as a linked list of customer objects that you have developed yourself or use the vector class.
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Jun 8, 2014
I have not been using pointers that long i most of my stuff has not needed them but now they do i need to learn how to use them more. I'm writing a program that simulates the squares most landed on(for fun) and i cant get a method to work because of an array pointer.
The error is no matching function for call to 'GameLoop::Loop(int, int (*)[4])'
Here is the latest version of the code. I've been editing a lot of things so there might be some stupid errors but I've tring everything.
rolling.h and rolling.cpp are just some dice function they are working perfect.
main.cpp
#include <iostream>
#include "Rolling.h"
#include "GameLoop.h"
Rolling Roll;
GameLoop Game;
[Code] ....
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Oct 22, 2014
Write a program to simulate a deck of 52 playing cards.
Represent your deck as a 2D Array where the value in the cell is the position of the card in the deck. Represent the names for the suits and faces as an array of Strings.
Write an algorithm to shuffle the deck.
Display the deck. For Example:
1 Jack of Spades
2 Deuce of Diamonds
3 Three of Diamonds
4 King of Spades
5 Eight of Clubs
6 King of Diamonds
7 Six of Clubs
8 Six of Spades
9 Eight of Hearts
Deal two hands of five cards each. For Example:
****** HAND 1 ******
Jack of Spades
Three of Diamonds
Eight of Clubs
Six of Clubs
Eight of Hearts
...
Below is what I have so far. Dealing two hands and displaying it. How would I be able to do that?
#include <iostream>
#include <ctime>
#include <string>
using namespace std;
void shuffle(int[][2]);
int main()
{
int j,deck[52][2];
[Code]...
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Apr 28, 2014
I need to program and simulate a 2 floor lift control system. How to do that ? I need to design its program only.
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Oct 26, 2014
Write a program to simulate a deck of 52 playing cards.
Represent your deck as a 2D Array where the value in the cell is the position of the card in the deck.
Represent the names for the suits and faces as an array of Strings.
#include "stdafx.h"
#include <iostream>
#include <string>
[Code].....
The problem: I am trying to connect the 1d arrays to the 2d arrays. Right now when I write: cout << deck[3][5] << endl; The output answer is 45. How do I populate the 2d array with the 1d arrays so that when I cout deck[3][5] I get it to say "Six of Spades"?
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