# include <stdio.h>

int main ( )
{
  int a[3][4] = { { 1, 2, 3, 4 }, 
                  { 2, 0, 1, 1 },
                  { 1, 1, 1, 1 } };

  int b[4][2] = { { 1, 1 },
                  { 1, 2 },
                  { 1, 3 },
                  { 1, 4 } };
  int c[3][2];
  int i;
  int j;
  int k;
//
//  Compute A * B = C;
//
  for ( i = 0; i < 3; i++ )
  {
    for ( k = 0; k < 2; k++ )
    {
      c[i][k] = 0;
      for ( j = 0; j < 4; j++ )
      {
        c[i][k] = c[i][k] + a[i][j] * b[j][k];
      }
    }
  }
//
//  Print the result.
//
  printf ( "\n" );
  printf ( "Result matrix C = A * B:\n" );
  printf ( "\n" );
  for ( i = 0; i < 3; i++ )
  {
    for ( k = 0; k < 2; k++ )
    {
      printf ( "  %4i", c[i][k] );
    }
    printf ( "\n" );
  }

  printf ( "\n" );
  printf ( "Correct result is [ 10 30 ]\n" );
  printf ( "                  [  4  9 ]\n" );
  printf ( "                  [  4 10 ]\n" );

  return 0;
}