// stats.cpp
#include <iostream>
#include <ctime>
#include <cmath>
usingnamespace std;
int rand_0toN1(int n);
int hits[10];
int main()
{
int n; // Number of trials; prompt from user
int i; // All-purpose loop variable
int r; // Holds a random value
srand(time(NULL)); // Set seed for randomizing.
cout << "Enter how many trials and press ENTER: ";
cin >> n;
// Run n trials. For each trial, get a num 0 to 9 and then
// increment the corresponding element in the hits array.
for (i = 0; i < n; i++)
{
r = rand_0toN1(10);
hits[r]++;
}
// Print all elemtents in the hits array, along with ratio of
// hits (n / 10).
for (i = 0; i < 10; i++)
{
cout << i << ": " << hits[i] << " Accuracy: ";
double results = hits[i];
cout << results / (n/10) << endl;
}
return 0;
}
// Random 0-to-N1 Function.
// Generate a random integer from 0 to N-1.
int rand_0toN1(int n)
{
return rand() % n;
}
got this straight out of the book (c++ without fear second edition)
and im using ubuntu
