highflyer8

Hi, I recently placed about 3 GB worth of my university files on a USB drive. After a few days, I tried to access the files on the USB. So, I opened the 'My computer' folder, which is when I noticed that the removable drive showed '164 MB of 3.93 …

I don't quite understand the motivations behind the different forms of examination systems. For instance, in the UK, the GCSE and A level exams are held nationally by a set of examination boards. However, things are different here in the US. Exams till 12th grade are done locally. What is …

I'm wondering why lecturers at university select the problems they select in the problem sets? I don't understand why those problems have to be selected and not any others.

I am an undergraduate student and. I have been facing a difficulty with my studies for quite some time. I hope you wouldn't mind sparing a few minutes to advise me on this matter. The problem is that whenever I read my lecture notes or a textbook or a labscript, …

Let's say you have made a class called threevector which takes stores three doubles. Then you define another class, a fourvector, which stores four doubles. I have seen this syntax used for the constructor of the fourvector: [CODE]fourvector(double fourth, threevector one_two_three): threevector (one_two_three) { fourth = 0.0; }[/CODE] I understand …

Hi, I don't understand the need for the while statement. Any help would be greatly appreciated. [CODE]double michel() { double x, y; do // The loop computes points on the graph of y against x. { x = 53.0*rand()/RAND_MAX; // x is the momentum. x is randomly generated. Min x …

Hi, if I run the following code and press L on the screen, I should be getting a leapfrog.txt textfile. But I only see my previous euler.txt. What is wrong with the code. Thanks in advance for any help. [CODE]#include <iostream> #include <fstream> #include <cmath> #include "H:\Visual Studio 2008\Projects\section2\threevector.h" using …

Hi, I am getting an error message when using base classes. The error message is x: undeclared identifier y: undeclared identifier z: undeclared identifier The particle class derives from the fourvector class which derives from the threevector class, as follows. [CODE]#ifndef THREEVECTOR_H // Prevents the class being re-defined #define THREEVECTOR_H …

Any method (within a C++ class) that prints to a file or to a screen has a return type of void. What role does the keyword [I]void[/I] perform?

Compiling the following the class in the main program returns error C2784. What could be causing the problem? [CODE]#include <iostream> // Include input/output stream #include <cmath> class threevector { public: double xcoord, ycoord, zcoord; // Default constructor threevector() { xcoord = 0.0; ycoord = 0.0; zcoord = 0.0; } // …

I have seen the following in a abook: "The argument(s) of a method can be any type of object (as long as its class has been made available to the program), as well as the predefined default types of variable. For example, methods in our three-vector class are not limited …

Hi, I have to calculate the exponetial of a large (on the order of 10^5) negative number. I tried using exp(), the exponential function from the cmath library, but I get an answer of 0. So, I tried to use the power series for the exponential function. For numbers from …

Hi, I am doing an undergraduate physics project by writing a C++ code to implement the Metropolis algorithm to a simple 2d one component plasma. In short, I have to determine the equilibrium configuration at each temperature by means of the Metropolis algorithm and then compute ensemble averages (such as …