Do I have the guarantee that sizeof(type) == sizeof(unsigned type)?

Question

The sizeof char, int, long double... can vary from one compiler to another. But do I have the guarantee according to the C++11 or C11 standard that the size of any signed an

Answer 1

Yes, there is a full guarantee that sizeof(signed type) is equal to sizeof(unsigned type) since unsigned is only taking the space of negative numbers of signed type to increase its range.