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What should really scare you is the pathetic performance of Android. Apps like chrome and acrobat reader are a joke! Stay with iOS or do as myself and get a Surface 2, it's much better in performance than any Android tablet, including the overrated and buggy Nexus 7 2013.
It's much easier to make the first version 100 times slower and then comment the offending line in the new version :-)
I have found a mistake: In table 9.1 of chapter 9 "Data types and Conversion" you wrote that the char data type ranges from -128 to 127, but that's not true, because the standard doesn't say that a char is signed or unsigned, it depends on the implementation. A char can be an unsigned char and in that case it will range from 0 to 255.
Portugal sucks in every way, not only for developers. Only consider coming here for vacation, this country is really on its kneels.
Hi! I am from Portugal too and I would love to work in another country but the problem for me is my English is lacking. How good was your English when you lwft?