Question

Develope a CPP program that multiplies two square matrixes. Your program will follow the steps below. 1. Print a statement welcoming the user to the program. 2. Ask the user the size of the matrix. (You only need one number since it will be square.) 3. Ask the user for the values of the first matrix. 4. Aks the user for the values of the second matrix 5. Display the result of multiplying the two matrixes.

Answer 1

#include <iostream> using namespace std; int main() { int n; cout << "Welcome to Matrix Multiply\n"; cout << "Enter size of Matrix:\n"; cin >> n; int A[n][n], B[n][n], C[n][n]; for(int i=0; i<n; i++) // taking user input of matrix A for(int j=0; j<n; j++) { cout << "Enter Value for Position A[" << i <<"][" << j <<"]" << endl; cin >> A[i][j]; } for(int i=0; i<n; i++) // taking user input of matrix B for(int j=0; j<n; j++) { cout << "Enter Value for Position B[" << i <<"][" << j <<"]" << endl; cin >> B[i][j]; } for (int m = 0; m < n; m++) // calculating the product of A and B for (int n1 = 0; n1 < n; n1++) { C[m][n1] = 0; for (int o = 0; o < n; o++) { C[m][n1] += A[m][o] * B[o][n1]; } } for(int i=0; i<n; i++) // printing output matrix C for(int j=0; j<n; j++) cout << "C[" << i <<"][" << j <<"]=" << C[i][j] << endl; }

/*SAMPLE OUTPUT Welcome to Matrix Multiply Enter size of Matrix: 2 Enter Value for Position A[0][0] 1 Enter Value for Position A[0][1] 2 Enter Value for Position A[1][0] 3 Enter Value for Position A[1][1] 4 Enter Value for Position B[0][0] 5 Enter Value for Position B[0][1] 6 Enter Value for Position B[1][0] 7 Enter Value for Position B[1][1] 8 C[0][0]=19 C[0][1]=22 C[1][0]=43 C[1][1]=50 */

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