In terms of modern C++, is it possible to specify storage of a integer numeral to a char?
I am looking to write auto var = 255; to initialize var as unsigned char type
It is possible to specify other types of storage:
auto var_ulong = 255ul;
auto var_float = 255.f;
However, not short or char? Surely I am missing something...
There is no standard integer literal to do what you want, but you can add your own user- defined literal if you plan to do this a lot:
namespace foo {
// constexpr pre C++20
// |
// V
consteval unsigned char operator"" _uchar(unsigned long long x) {
return static_cast<unsigned char>(x);
}
}
using namespace foo;
auto var_uchar = 255_uchar;
Just be aware that normal integer promotion will still be in effect, so below, you'll get an int:
auto var_int = 55_uchar + 10_uchar;