1.      Program to implement matrix multiplication using arrays.

1. #include <iostream.h>

2. #include<conio.h>

3. void multiplyMatrices(int A[][10], int B[][10], int C[][10], int m, int p, int n) {

4.     for (int i = 0; i < m; i++) {

5.                 for (int j = 0; j < n; j++) {

6.                     C[i][j] = 0;

7.                     for (int k = 0; k < p; k++) {

8.                                 C[i][j] += A[i][k] * B[k][j];

9.                     }

10.                 }

11.     }

12. }

13.  

14. void printMatrix(int A[][10], int m, int n) {

15.     for (int i = 0; i < m; i++) {

16.                 for (int j = 0; j < n; j++) {

17.                     cout << A[i][j] << " ";

18.                 }

19.                 cout << endl;

20.     }

21. }

22.  

23. int main() {

24.     int A[10][10], B[10][10], C[10][10];

25.     int m, n, p;

26.  

27.     cout << "Enter the dimensions of matrix A (m x p): ";

28.     cin >> m >> p;

29.  

30.     cout << "Enter the elements of matrix A:\n";

31.     for (int i = 0; i < m; i++) {

32.                 for (int j = 0; j < p; j++) {

33.                     cin >> A[i][j];

34.                 }

35.     }

36.  

37.     cout << "Enter the dimensions of matrix B (p x n): ";

38.     cin >> p >> n;

39.  

40.     cout << "Enter the elements of matrix B:\n";

41.     for ( i = 0; i < p; i++) {

42.         for (int j = 0; j < n; j++) {

43.             cin >> B[i][j];

44.         }

45.     }

46.  

47.     multiplyMatrices(A, B, C, m, p, n);

48.  

49.     cout << "Product of A and B:\n";

50.     printMatrix(C, m, n);

51.     getch();

52.     return 0;

53. }

55.