Jan 12, 2009 · The reason seems to be that C++ sees char, signed char and unsigned char as three different types. Whereas int is the same as a signed int.

Feb 12, 2020 · From C++14 char , if signed , must be a 2's complement type. That means that it has the range of at least -128 to +127.

Mar 7, 2018 · Whether a char is signed or unsigned, it still uses the same amount of space in memory which is the first thing the compiler needs to know.

Aug 9, 2011 · It is implementation defined whether plain char uses the same representation as signed char or unsigned char.

Mar 20, 2013 · Three types of char are specified: signed, plain, and unsigned. A plain char may be represented as either signed or unsigned, depending upon the implementation.

Sep 15, 2018 · No, this is implementation-dependent. std::string is an alias for std::basic_string<char> , so the question boils down to the signedness of ...

Oct 18, 2013 · The most basic explanation is that unsigned char ranges from 0..255 and signed char ranges from -127..128. So you cannot convert a signed char of -42 to ...

Feb 23, 2011 · It is very simple to write a template that will remove the signed or unsigned from the char type by using two specializations for those particular types.

Nov 10, 2008 · 4 Answers 4 · 1. char and signed char not the same? Oh wow, +1! As Scott Meyers would say, Aha! artima.com/cppsource/top_cpp_aha_moments.html. – ...

Jun 21, 2021 · The values of unsigned char are 0..255 (on systems where size of byte is 8 bits). Each 2 of those values represent some textual symbol.