c++ problem

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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SAMPLE TESTCASE
Input Matrix
Resulting Matrix
Matrix A
Matrix B
Matrix A
Matrix B
{5, 6, 0, 3}
{9, 3, 7, 0}
{87, 15, 21, 0}
{9, 3, 7, 0}
MATRIX MULTIPLICATION (FOR 2X2 MATRICES)
The formula for 2x2 matrix multiplication is as follows:
[a b][e
j
i = a · e +b· g
k = c·e +d ·g
j = a ·f +b · h
m = c ·f +d · h
Transcribed Image Text:SAMPLE TESTCASE Input Matrix Resulting Matrix Matrix A Matrix B Matrix A Matrix B {5, 6, 0, 3} {9, 3, 7, 0} {87, 15, 21, 0} {9, 3, 7, 0} MATRIX MULTIPLICATION (FOR 2X2 MATRICES) The formula for 2x2 matrix multiplication is as follows: [a b][e j i = a · e +b· g k = c·e +d ·g j = a ·f +b · h m = c ·f +d · h
The matrix_multiply() function receives two arrays of doubles representing two 2x2 matrices. It
then performs a matrix multiplication between the two matrices. The result of the matrix
multiplication should be stored in the first array passed.
The function must have the following function declaration:
void matrix_multiply (double matrixA[], double matrixB[]);
parameter
description
An array of 4 doubles, representing a 2x2 matrix. The result of the matrix
matrixA
multiplication is to be stored in this parameter.
An array of 4 doubles, representing a 2x2 matrix. This parameter is not to be
matrixB
modified.
The following illustrates how each array index correlates to the the matrix indices in our 2x2
matrix:
column 1
column 2
row 1
matrix[0]
matrix[1]
row 2
matrix[2]
matrix[3]
For example, the array {5, 6, 0, 3} represents the following matrix:
Transcribed Image Text:The matrix_multiply() function receives two arrays of doubles representing two 2x2 matrices. It then performs a matrix multiplication between the two matrices. The result of the matrix multiplication should be stored in the first array passed. The function must have the following function declaration: void matrix_multiply (double matrixA[], double matrixB[]); parameter description An array of 4 doubles, representing a 2x2 matrix. The result of the matrix matrixA multiplication is to be stored in this parameter. An array of 4 doubles, representing a 2x2 matrix. This parameter is not to be matrixB modified. The following illustrates how each array index correlates to the the matrix indices in our 2x2 matrix: column 1 column 2 row 1 matrix[0] matrix[1] row 2 matrix[2] matrix[3] For example, the array {5, 6, 0, 3} represents the following matrix:
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