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main.cc
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	#include <cstdlib>
	#include <cmath>
	#include <iostream>
	#include <iomanip>
	#include <memory>
	#include <ctgmath>

	#include "arithmetic.hh"
	#include "pi.hh"
	#include "series.hh"
	#include "print.hh"
	#include "write.hh"
	#include "dumper.hh"

	/* -------------------------------------------------------------------------- */

	int main(int argc, char ** argv) {

	// Parse arguments into stringstream
	std::stringstream sstr;
	for (int i = 1; i < argc; ++i) {
	sstr << argv[i] << " ";
	}

	// Argument 1: series type ("ar" or "pi")
	std::string seriestype;
	sstr >> seriestype;

	// Argument 2: number of iterations
	unsigned int N;
	sstr >> N;

	// Argument 3: dump method ("print" or "write")
	std::string dumpmethod;
	sstr >> dumpmethod;

	// Argument 4 (conditional): frequency (for "print") or separator (for "write")
	unsigned int freq;
	std::string separator;
	if (dumpmethod == "print") {
	sstr >> freq;
	} else if (dumpmethod == "write") {
	sstr >> separator;
	}

	// Instanciate appropriate series object
	std::unique_ptr<Series> series; // doesn't point to anything yet
	if (seriestype == "ar") {
	series.reset(new ComputeArithmetic);
	} else if (seriestype == "pi") {
	series.reset(new ComputePi);
	}

	// Instanciate appropriate dumper object
	std::unique_ptr<DumperSeries> dumper; // doesn't point to anything yet
	if (dumpmethod == "print") {
	dumper.reset(new PrintSeries(*series, N, freq));
	} else if (dumpmethod == "write") {
	dumper.reset(new WriteSeries(*series, N, separator));
	}

	// Dump series
	dumper->dump();

	return EXIT_SUCCESS;
	}