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main.cpp

#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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