#include <stdio.h>
#include <stdlib.h>
#include "myheader.h"

#define N 5

int main()
{
  int t[ N ][ N ] =
    { {  3,  2, 10, -14,  -7 },
      { -6, -3, -4, -19,  20 },
      { -5,  6,  1,  18,  -8 },
      { 15, 17, -4,  15, -19 },
      { 20,  1, 17,  -7,  -4 } };
  int i, j, *p;

  printf( "%d\n\n", N );
  for ( i = 0; i < N; ++i )
  {
    for ( j = 0; j < N; ++j )
    {
      if ( j > 0 )
        putchar( ' ' );
      printf( "%d", t[ i ][ j ] );
    }
    putchar( '\n' );
  }
  putchar( '\n' );
  p = antidiagonal( &t[0][0], N );
  for ( i = 0; i < N; ++i )
  {
    for ( j = 0; j < N; ++j )
    {
      if ( j > 0 )
        putchar( ' ' );
      printf( "%d", t[ i ][ j ] );
    }
    putchar( '\n' );
  }
  putchar( '\n' );
  for ( i = 0; i < N; ++i )
  {
    if ( i > 0 )
      putchar( ' ' );
    printf( "%d", p[ i ] );
  }
  putchar( '\n' );
  free( p );
  return EXIT_SUCCESS;
}