C++ :: Simulate Quantum Tunneling Current - Code Doesn't Do Calculation

Mar 6, 2014

Overview: I'm creating a code to simulate quantum tunneling current.

I'm getting the code to output data on a spreadsheet file, and it all works except the following part, which are just giving values of 0 all the way down for the entire column.

j_tl=((eV*hbar*k)/(m/c*c))*(1 - R_lr - T_rl);

When I remove the ((eV*hbar*k)/(m/c*c)) part of it, it gives out values for the (1 - R_lr - T_rl) so I presume the problem is in the former. But I'm struggling to think what it could be. The same is happening for j_tr.

Full code here

#include <iostream>
#include <math.h>
#include <fstream>
#include <stdio.h>
using namespace std;
int main() {
double k,q,p,y;
double E; //Electron energy (V)

[code]....

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I've implemented it a bit differently: I create 2 temporary arrays, one for the numbers lower from the pivot , an done for numbers greater then the pivot. in the end of each iteration the 2 arrays are copied to the original array:

Code: #include <iostream>
void QuickSort (int* A , int start, int end){
if (end-start<3){
return;
}
int mid=(start+end)/2;
int pivot=A[mid];
int lA[end-start] , rA[end-start], rCounter=0,lCounter=0;
int curr=0,i=start;

[code]....

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Code:

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[Code] .....

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The line highligted in red is the line that the system is rejecting at the moment (but there may be other issues). why it is invalid?

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Code:
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
void change(double cents, int a[]);
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double Dollars;
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[code]...

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Code:
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#include <iostream>
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[Code] ....

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Code:
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#include <ctime>
#include <cstdlib>
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using namespace std;
double dist(int a, int b);

[Code] .....

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[Code] .....

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Code:

#include<stdio.h>
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[Code] .....

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#include <iomanip>
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using namespace std;
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[Code]...

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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"
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[Code] ....

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using namespace std;
void main() {
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[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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#include <sstream>
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#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
int main(int argc, char *argv[]) {
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[Code] ....

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main.cpp

#include <iostream>
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[Code] ....

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Write an algorithm to shuffle the deck.

Display the deck. For Example:

1 Jack of Spades
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6 King of Diamonds
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Deal two hands of five cards each. For Example:

****** HAND 1 ******
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Six of Clubs
Eight of Hearts
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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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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.

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#include "stdafx.h"
#include <iostream>
#include <string>

[Code].....

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Source-code:

Code:
#include <iostream>
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int myTop, index, nex = -1;
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[Code].....

And one more thing: how do I get straight 0 from 25 index in the first coulumn?

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