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Source Code
Language
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main()
{
const int TRIES = 100000; //can increase TRIES for more accuracy
srand(time(0));
int hits = 0;
for (int i = 1; i <= TRIES; i++)
{
double r = rand() * 1.0 / RAND_MAX; // Between 0 and 1
double x = -1 + 2 * r; // x in range –1 to 1
r = rand() * 1.0 / RAND_MAX; //rand value for y
double y = -1 + 2 * r;
if (x * x + y * y <= 1) //hit inside circle
{
hits++;
}
}
double pi_estimate = 4.0 * hits / TRIES;
cout << "Estimate for pi: " << pi_estimate << endl;
return 0;
}
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