Example: Write a program to multiply two matrix. Firstly, ask from user order of matrix( number of rows and column) Then take the elements of matrix from user as a input and print the resultant matrix.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | #include <stdio.h> int main() { int m, n, p, q, i, j, k, sum = 0; int f[10][10], s[10][10], multiply[10][10]; printf("Enter number of rows and columns of first matrix\n"); scanf("%d%d", &m, &n); printf("Enter elements of first matrix\n"); for (i = 0; i < m; i++) { for (j = 0; j < n; j++) { scanf("%d", &f[i][j]); } } printf("Enter number of rows and columns of second matrix\n"); scanf("%d%d", &p, &q); if (n != p) { printf("The matrices can't be multiplied with each other.\n"); } else { printf("Enter elements of second matrix\n"); for (i = 0; i < p; i++) { for (j = 0; j < q; j++) { scanf("%d", &s[i][j]); } } for (i = 0; i < m; i++) { for (j = 0; j < q; j++) { for (k = 0; k < p; k++) { sum = sum + f[i][k]*s[k][j]; } multiply[i][j] = sum; sum = 0; } } printf("Product of the matrices:\n"); for (i = 0; i < m; i++) { for (j = 0; j < q; j++) { printf("%d\t", multiply[i][j]); } printf("\n"); } } return 0; } |

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | Enter number of rows and columns of first matrix 2 2 Enter elements of first matrix 2 3 4 5 Enter number of rows and columns of second matrix 2 2 Enter elements of second matrix 2 3 4 5 Product of the matrices: 16 21 28 37 |