Linear Algebra and the C Language/a0jl

Install and compile this file in your working directory.

/* ------------------------------------ */
/*  Save as :   c00b.c                  */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
int main(void)
{ 
double s = 6;

double u_T[R1*C3] = { 4, 2, 5};                                             

double **U_T   = ca_A_mR(u_T ,    i_mR(R1,C3));
double **V_T   = smul_mR(s,U_T,   i_mR(R1,C3));    
double **UxV_T =  UxV_mR(U_T,V_T, i_mR(R1,C3));
   
  clrscrn();
  printf("  s = %+.0f\n\n",s);         
  printf("  u_T:");
  p_mR(U_T, S4, P0, C6);
  printf("  v_T:");
  p_mR(V_T, S4,P0,C6);

  printf("\n\n"
         " If u and v are colinear then u x v == 0\n\n"
         "    (uxv):");    
  p_mR(UxV_T, S5,P0,C6);
  
  stop();
  
  f_mR(U_T); 
  f_mR(V_T); 

  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */

If u and v are colinear then u x v == 0:

Screen output example:

  s = +6

  u_T:
  +4   +2   +5 

  v_T:
 +24  +12  +30 



 If u and v are colinear then u x v == 0

    (uxv):
   +0    -0    -0 

 Press return to continue.