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pcsc_git/lectures/week8/code_snippets/arithmetic_series.cpp
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arithmetic_series.cpp
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			#include <iostream>

			int arithmetic(int i) {
			if (i == 1)
			return 1;
			return i + arithmetic(i - 1);
			}

			int main() {
			int a = 5;
			std::cout << arithmetic(a);
			std::cout << std::endl;
			}