matrix.c

matrix.c

#include

#include "matrix.h"

int main() {

int n = 3;

int m1[n][n];

int m2[n][n];

int m3[n][n];

/* assign 3X3 matrix to following values

8 1 6

3 5 7

4 9 2

*/

int v[9] = { 8, 1, 6, 3, 5, 7, 4, 9, 2 };

int i, *p = &v[0];

int *p1 = &m1[0][0];

for (i = 0; i

printf(" m1: ");

display_matrix(&m1[0][0], n);

printf("msum(m1):%d ", msum(&m1[0][0], n));

printf(" m2=m1': ");

transpose_matrix(&m1[0][0], &m2[0][0], n);

display_matrix(&m2[0][0], n);

printf("msum(m2):%d ", msum(&m2[0][0], n));

multiply_matrix(&m1[0][0], &m2[0][0], &m3[0][0], n);

printf(" m3=m1*m2': ");

display_matrix(&m3[0][0], n);

printf("msum(m3):%d ", msum(&m3[0][0], n));

// vector

int v1[] = {1, 1, 1};

printf(" v1: ");

display_vector(v1, n);

printf("vsum(v1):%d ", vsum(v1, n));

int v2[n];

multiply_vector(&m1[0][0], v1, v2, n);

printf(" v2=m1*v1': ");

display_vector(v2, n);

printf("vsum(v2):%d", vsum(v2, n));

return 0;

}

Write C program matrix.h to define the prototypes of the following functions, and C program matrix.c to implement the functions of matrix.h. /* Displays vector v of n elements in one line. */ void display_vector(int *v, int n); /* * Computes and returns the sum of all elements of vector v */ int vsum(int *v, n); Displays n by n matrix m in 2D style. */ void display_matrix(int *m, n); /* * Computes and returns the sum of all elements of the n by n matrix m. */ int msum(int *m, n); /* * Transposes the n by n matrix ml and save the resulted matrix in m2. */ void transpose_matrix(int *ml, int *m2, int n); /* * Computes the matrix multiplication ml*m2 and saves the resulted matrix in m3. void multiply_matrix(int *ml, int *m2, int *m3, int n); /* * Computes n by n matrix multiplies n-vector m*vl and saves the result vector in v2. */ void multiply_vector(int *m, int *vi, int *v2, int n); Use the provided the main function program matrix main.c to test the above functions. The output is like the following Public test ml: 8 1 6 3 5 7 4 9 2 msum (ml):45 m2=m1': 8 3 4 1 5 9 6 7 2 msum (m2):45 71 m3=m1*m2': 101 53 71 83 71 53 71 101 msum (m3):675 vl: 1 1 1 vsum(v1):3 v2=m1*vi': 15 15 15 vsum (v2):45 matrix.h * your program signature */ void display_vector(int *v, int n); int vsum(int *v, int n); void display_matrix(int *m, int n); int msum(int *m, int n); void transpose_matrix(int *ml, int *m2, int n); void multiply_matrix(int *ml, int *m2, int *m3, int n); void multiply_vector(int *m, int *vi, int *v2, int n); I . #include #include "matrix.h" #include #include "matrix.h" void display_vector(int *v, int n) { int *p = v, i, j; for (i = 0; i