6. Write a program that can multiply an n x m matrix and m x n matrix together: The input specifications are these: Read n and m using scanf function. Read two matrices using a for loop inside the main function. The output (product) matrix must be computed in a function named matrix_mult which will have the two input matrices as arguments.

see explaination

Explanation:

#include

#include

void matrix_mult (int * *m1, int * *m2, int * *m3, int n, int m) {

int i, j, k, sum=0;

for (i = 0; i < n; + +i) {

for (j = 0; j < n; + +j) {

sum = 0;

for (k = 0; k < m; + +k) {

sum + = m1[i][k] * m2[k][j];

}

m3[i][j] = sum;

}

}

}

int main () {

int n, m, i, j;

int * *m1, * *m2, * *m3;

printf ("Enter number of rows: ");

scanf ("%d", &n);

printf ("Enter number of columns: ");

scanf ("%d", &m);

m1 = malloc (sizeof (int * ) * n);

m2 = malloc (sizeof (int * ) * m);

m3 = malloc (sizeof (int * ) * n);

for (i = 0; i < m; + +i) {

m1[i] = malloc (sizeof (int) * m);

m2[i] = malloc (sizeof (int) * n);

m3[i] = malloc (sizeof (int) * n);

}

printf ("Enter first matrix/n");

for (i = 0; i < n; + +i) {

for (j = 0; j < m; + +j) {

scanf ("%d", & (m1[i][j]));

}

}

printf ("Enter second matrix/n");

for (i = 0; i < m; + +i) {

for (j = 0; j < n; + +j) {

scanf ("%d", & (m2[i][j]));

}

}

matrix_mult (m1, m2, m3, n, m);

printf ("product is/n");

for (i = 0; i < n; + +i) {

for (j = 0; j < n; + +j) {

printf ("%d ", m3[i][j]);

}

printf ("/n");

}

printf ("Enter first matrix: ");

return 0;

}