#include <stdio.h>


int main( void )
{
  float test = 1.0e30f;
  printf("1) A big number:                   %e\n",   test);
  test *= 1.0e38f;
  printf("1) A big number * 1.0e38:          %e\n",   test); 
  test /= 1.0e38f;
  printf("1) A big number * 1.0e38 / 1.0e38: %e\n\n", test);

  test = 1.0e30f;
  printf("2) A big number:                   %e\n",   (float) test);
  printf("2) A big number * 1.0e38:          %e\n",   (float)( test * 1.0e38f ) );
  printf("2) A big number * 1.0e38 / 1.0e38: %e\n\n", (float)( (test * 1.0e38f) / 1.0e38f ) );

  printf("3) A big number:                   %e\n",   (float) 1.0e30f);
  printf("3) A big number * 1.0e38:          %e\n",   (float)( 1.0e30f * 1.0e38f ) );
  printf("3) A big number * 1.0e38 / 1.0e38: %e\n\n", (float)( (1.0e30f * 1.0e38f) / 1.0e38f ) );

  return 0;
}