int fun1 ( int height );  //遵循1
int fun2 ( int height );  //遵循2
int fun3 ( int width  );  //遵循3

int main ( void )
{
  int i, j1, j2, j3;

  i  = 1000;
  j1 = fun1 ( i );
  j2 = fun2 ( i );
  j3 = fun3 ( i );

  return ( 0 );
}

int fun1 ( int height )
{
  int h;

  h = height + 10;

  return h;
}

int fun2 ( int height )
{
  int h;

  h = height - 10;

  return h;
}

int fun3 ( int width )
{
  int w;

  w = width - 10;

  return w;
}