ch-04-ex-04-solution.cpp
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ch-04-ex-04-solution.cpp
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			/*
			* chapter-04-exercise-04.cpp
			*
			* Dynamic memory for 2D matrices
			*
			* Created on: Sep 24, 2012
			* Author: Radu Popescu <radu.popescu@epfl.ch>
			*/

			#include <iostream>

			int main(int argc, char *argv[]) {
			// Do everything one billion times
			for (int n = 0; n < 1000000000; ++n) {
			// Allocate matrices
			double *A = new double [2];
			double *B = new double [2];
			double *C = new double [2];
			for (int i = 0; i < 2; ++i) {
			A[i] = new double[2];
			B[i] = new double[2];
			C[i] = new double[2];
			}

			// Assign values to A and B
			A[0][0] = 1.0;
			A[0][1] = 2.0;
			A[1][0] = 3.0;
			A[1][1] = 4.0;
			B[0][0] = 1.0;
			B[0][1] = 2.0;
			B[1][0] = 3.0;
			B[1][1] = 4.0;

			// Compute C = A + B
			for (int i = 0; i < 2; ++i) {
			for (int j = 0; j < 2; ++j) {
			C[i][j] = A[i][j] + B[i][j];
			}
			}
			std::cout << "The matrix C is: " << std::endl;
			for (int i = 0; i < 2; ++i) {
			for (int j = 0; j < 2; ++j) {
			std::cout << C[i][j] << " ";
			}
			std::cout << std::endl;
			}

			// Cleanup
			for (int i = 0; i < 2; ++i) {
			delete[] A[i];
			delete[] B[i];
			delete[] C[i];
			}
			delete[] A;
			delete[] B;
			delete[] C;
			}

			return 0;
			}