#include using namespace std; void enterData(int firstMatrix[][10], int secondMatrix[][10], int rowFirst, int columnFirst, int rowSecond, int columnSecond); void multiplyMatrices(int firstMatrix[][10], int secondMatrix[][10], int multResult[][10], int rowFirst, int columnFirst, int rowSecond, int columnSecond); void display(int mult[][10], int rowFirst, int columnSecond); int main() { int firstMatrix[10][10], secondMatrix[10][10], mult[10][10], rowFirst, columnFirst, rowSecond, columnSecond, i, j, k; cout << "Enter rows and column for first matrix: "; cin >> rowFirst >> columnFirst; cout << "Enter rows and column for second matrix: "; cin >> rowSecond >> columnSecond; // If colum of first matrix in not equal to row of second matrix, asking user to enter the size of matrix again. while (columnFirst != rowSecond) { cout << "Error! column of first matrix not equal to row of second." << endl; cout << "Enter rows and column for first matrix: "; cin >> rowFirst >> columnFirst; cout << "Enter rows and column for second matrix: "; cin >> rowSecond >> columnSecond; } // Function to take matrices data enterData(firstMatrix, secondMatrix, rowFirst, columnFirst, rowSecond, columnSecond); // Function to multiply two matrices. multiplyMatrices(firstMatrix, secondMatrix, mult, rowFirst, columnFirst, rowSecond, columnSecond); // Function to display resultant matrix after multiplication. display(mult, rowFirst, columnSecond); return 0; } void enterData(int firstMatrix[][10], int secondMatrix[][10], int rowFirst, int columnFirst, int rowSecond, int columnSecond) { int i, j; cout << endl << "Enter elements of matrix 1:" << endl; for(i = 0; i < rowFirst; ++i) { for(j = 0; j < columnFirst; ++j) { cout << "Enter elements a"<< i + 1 << j + 1 << ": "; cin >> firstMatrix[i][j]; } } cout << endl << "Enter elements of matrix 2:" << endl; for(i = 0; i < rowSecond; ++i) { for(j = 0; j < columnSecond; ++j) { cout << "Enter elements b" << i + 1 << j + 1 << ": "; cin >> secondMatrix[i][j]; } } } void multiplyMatrices(int firstMatrix[][10], int secondMatrix[][10], int mult[][10], int rowFirst, int columnFirst, int rowSecond, int columnSecond) { int i, j, k; // Initializing elements of matrix mult to 0. for(i = 0; i < rowFirst; ++i) { for(j = 0; j < columnSecond; ++j) { mult[i][j] = 0; } } // Multiplying matrix firstMatrix and secondMatrix and storing in array mult. for(i = 0; i < rowFirst; ++i) { for(j = 0; j < columnSecond; ++j) { for(k=0; k

matrix multiplication by function