GCC stands for GNU C Compiler, it's a solid compiler that works well on the *nix kernels, there's a port of it on cygwin which is arguably slower but still works. Whether it's the best or not depends on what platform you are working on and with what you're trying to make on it.
Standard Postcard-a standard postcard mails First Class at current rate of 35Â¢. The smallest maiLabel size for ANY postcard is 3Â½â³ x 5.â³. The largest postcard size for mailing at the 35Â¢ rate is 4Â¼â³ x 6.â³. The paper thickness must be at least 0.007 â³ and not more than 0.016 â³ in thickness.
But, here's an exception: small cards that no more than 4Â¼ inches tall and 6 inches wide and are mailed at First Class Retail or Presorted First Class rates are classified as postcards and get a lower postage price. The exception only applies to First Class prices. For Marketing Mail bulk mail, and other mail classes, postcards are considered to be letters and require the same postage as other pieces in the letters category. Letters that can be sorted on automated equipment get better ...