private.cc
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	#include <iostream>
	#include <omp.h>

	int main() {
	int a = 1, b = 2;
	double c = 3.;

	std::printf("Thread %i sees, a, b, c: %i, %i, %g (before)\n",
	omp_get_thread_num(), a, b, c);

	#pragma omp parallel num_threads(3), private(a), firstprivate(b)
	{
	std::printf("Thread %i sees, a, b, c: %i, %i, %g (inside)\n",
	omp_get_thread_num(), a, b, c);
	c = -1e-3;
	}

	std::printf("Thread %i sees, a, b, c: %i, %i, %g (after)\n",
	omp_get_thread_num(), a, b, c);

	return 0;
	}