Code-Bin #263

untitled C++ Code
Posted by: bdizzle | March 25, 2009 @ 12:30am

C++ Code

Brian Wieland          Physics 420          March 24, 2009
HW #8, Problem #1

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Initial Inputs:

Calculate the 3-rd moment of the random number distribution

Output

Outputs random numbers to screen

// generate integer random numbers between i1 and i2
#include <iostream>
#include <cstdlib>
#include <cmath>
#include <ctime>

using namespace std;
int main ()
{

int nmax=100; /* generate 10 random numbers*/
int i1=1, i2=6, irandom;
int rand_x[nmax];
double k = 3.0; // degree of moment
int moment = 0;
double final_moment = 0.0;

srand (469); /* initial seed  for x-values*/
//srand(time(NULL)); // better to "randomize" seed values

for (int i=0; i < nmax; i=i+1)
{
rand_x[i] = i1+rand()%(i2-i1+1); //number between i1 & i2*/

cout << " " << rand_x[i]<< endl;
}

for(int i=0; i < nmax; i++)
{
   moment = moment + pow(rand_x[i],k);
}

// Calculates k'th moment
final_moment = (1.0 / nmax) * moment;

cout << endl << k << "rd moment is: " << final_moment << endl << endl;

system("pause");
return 0;
}

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