minorfr.c

基本矩阵运算 : + - *, power, transpose, trace, determinant, minor, matrix of minor, cofactor, matrix of co

/* gjid03.c                         freeware                   [e-mail]
*/

/* --------------------------------- INCLUDES ------------------------------- */
#include "x_ahfile.h"

/* ------------------------------------- FUNCTION --------------------------  */
/* Do    :                                                                    */
/*                                                                            */


/* -------------------------------------------------------------------------- */
void minor(int n)
{
int      row;
int      col;
fraction f;

double pbA    [MXR][MXC*C2];mF mA   = {MXR,MXC*C2,&pbA    [0][0]};

                     mA.rows=n;                   mA.cols=n*C2;
/*-------------------------------- PROGRAM ---------------------------------- */
  rnd_mF(&mA,9,9);
  row = rndp0_I(n);         /* c   */
  col = rndp0_I(n);

  clrscrn();
  printf("                                                       A :");
  p_mF(&mA);

  f = minor_F(&mA, row, col);
  printf("\n\n minor of entry A(%d,%d) %.0f/%.0f \n",
          row+1,  /* math */
          col+1,
          f.n,
          f.d);
}

void hello(void)
{
  printf("\n Freeware by : xhunga bernard 06000 Nice France.\n");
  printf("\n                                                  ");
  printf("\n            Find a minor of mA                    ");
  printf("\n            ******************                  \n");
  printf("\n The size of mA : 2x2 ... 4x4.                  \n");
  printf("\n           ex : \"minorf.exe\"                  \n");
  printf("\n You can choose the size :                      \n");
  printf("\n           ex : \"minorf.exe 2\" -> mA 2x2        ");
  printf("\n                \"minorf.exe 3\" -> mA 3x3        ");
  printf("\n                \"minorf.exe 4\" -> mA 4x4        ");
  printf("\n                                                  ");
  printf("\n                                                  ");
  printf("\n Distributed  by :  http://www.simtel.net/        ");
  printf("\n                                                  ");
  printf("\n Press return to continue                          ");
  printf("\n                                                  ");

  getchar();
}

/* --------------------------------- MAIN ----------------------------------- */
int main(int argc, char *argv[])
{
time_t t;
int    n;

/*-------------------------------- PROGRAM ---------------------------------- */
  srand(time(&t));
  hello();
do
{
if( argc == 2 && atoi(argv[1]))
 {  n = atoi(argv[1]); if( n > 4){n=4;}}
else
 {  n = rndp_I(4);}
if( n < 2){n=2;}


  minor(n);


printf("\n Press 'X' Return to stop\n");
} while(toupper(getchar())!='X');

  return 0;
}